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Opinionatedly Yours

"Opinionatedly Yours"
#17: February 2, 1999
Mrs. Brown and Other Gods of
Nature
(and Why I Think There Are "Too Many" of Them)
By Barry Kent MacKay
Mrs. Brown was someone I knew when I was a kid, in the
increasingly distant days of the 1950s. She was one of a very few
women in Canada who were licensed to band birds. My mother was
another. Mrs. Brown did not live far from where my family lived and
it was only natural that we would come to know her. We sometimes
joined her on field trips where we'd use special nets to capture
birds and place on their legs numbered aluminum bands provided by
the Canadian government. We also each banded birds in our own
gardens. The bands, issued by the U.S. Fish and Wildlife Service
(and using that agency's return address), were to help to understand
more about the biology of these birds, with particular reference to
their migration habits and longevity.
In those days the term "animal rights" was yet to be coined, and
the philosophy behind the phrase was certainly unknown to me. While
I liked animals and disliked cruelty, I "bought into" many of the
arguments made in justification for various forms of animal abuse.
So while it wasn't something I would have done, I was not
particularly surprised or deeply concerned that Mrs. Brown killed
starlings. A lot of people killed starlings.
The Eurasian Starling is an introduced, or non-native, species
whose numbers caused problems for other, native birds and for
people, or so we were told. The Eastern Bluebird was particularly
hard-hit, or so the argument went, and might become extinct as a
result of the presence of starlings. Starlings, you see, bullied the
smaller bluebirds out of their nest-sites, with both species given
to nesting in cavities, such as those left by woodpeckers. Neither
starlings nor bluebirds are able to excavate their own nest sites.
Thus bluebirds could be encouraged by use of nest boxes with holes
small enough to prevent the starlings from getting in, but still
large enough to accommodate bluebirds. That was one way to help
bluebirds to recover their numbers. Another way was to kill
starlings.
Mind you, the fact is that both Tree Swallows and House Wrens
also nest in the kinds of cavities bluebirds do, and also compete
with bluebirds. House Wrens will destroy the eggs of other
hole-nesting species while Tree Swallows can drive away the
bluebirds. However, as the swallows and wrens are native, and not as
ubiquitous as starlings, they were somehow not implicated in the
decline of the bluebirds. (There were exceptions: I remember my
shock upon visiting the farm of a well-known Disney wildlife
photographer, in rural Ontario, and discovering that he shot all
House Wrens on his property so they would not interfere with
bluebird nests. I was, however, not particularly surprised that he
fed baby starlings to a Great Horned Owl in his care.)
Wrens and Tree Swallows, plus one or two other cavity-nesting
bird species in our region, such as the Great Crested Flycatcher,
somehow did not seem to suffer as much as bluebirds from competition
with starlings, although I have see the latter species actually take
over from a Northern Flicker. Flickers are sharp beaked woodpeckers
and are larger and stronger than starlings, but still can't always
defend themselves against the European Starling.
What Mrs. Brown did with a starling was this: she put the bird in
a paper bag and then, with a pair of scissors, she cut off its
head.
That part sickened me, I admit, but I was too young to think
things through. The "common knowledge" of the day was that starlings
were "nuisance" wildlife that had to be "controlled" for the sake of
native species. So while I didn't really like what Mrs. Brown did to
starlings, I understood that there was a reason and it was one that
I thought was valid. European Starlings, or at least what they did,
were "bad", thus eliminating them was "good" even though I had to
suppress my natural feelings of compassion to feel that way. (In
those days I did a lot of such suppression of emotion, thinking it
was what I should do; but we will deal with that topic in future
installment of Opinionatedly Yours.)
Then, one day we visited Mrs. Brown as she was banding birds in
her garden. She had just caught some American Goldfinches. These are
a charming little native bird and about as innocuous to any human
interest as any animal can be. As Mrs. Brown held one of the birds
in her hand she looked at it speculatively and mused, "You know, for
some reason there's a lot more goldfinches this year than I've ever
seen before. I wonder if there's too many?"
Both my mother and I spontaneously protested that we thought
there weren't too many goldfinches. I think both of us had immediate
visions of Mrs. Brown putting goldfinches into paper bags and
cutting off their heads in the interest of restoring the balanced
world in which animals were not more common than they "should" be.
In those days the word "epiphany" had yet to gain its current
popularity, but I think that I had one when Mrs. Brown mused about
goldfinch numbers. Who are we to decide when there are "too many" of
something?
Mrs. Brown was a God-player. She felt she knew what was "right"
and what was "wrong" in the environment. Hers was an attitude that
is far from rare; in fact it is common and something we are
conditioned to accept from infancy as a "given". The world is full
of God-players and many of them are wildlife managers whose salaries
we pay through our taxes. God-playing is a profession.
The contention that there are too many (or too few) of any
species of wild plant or animal is incomplete. Too many for what?
Invariably a value must be evoked to justify the contention. What,
in other words, is the problem?
Deer Me ...
From the days when I knew Mrs. Brown, let us flash forward more
than 40 years to the present. In temperate eastern North America,
where I live, the original forest cover has been fragmented over the
last two or three centuries. In many regions it has been eliminated
over wide tracts of what are now productive farmland, as well as
urban sprawl. The process by which this happened is often called
"clearing," a non-too subtle suggestion that trees are in the way.
The trees were indeed in the way of other interests, such as
farming. The farms feed people. Even a vegan requires fruits,
grains, and vegetables. Producing farmland has a greater capacity to
support humans than does forest. Forest has a greater capacity for
supporting non-human animals.
However there are remnant patches of forest and wood lot here and
there, plus orchards and irregular appearances of second growth wood
lot, quite different from the full climax beech and maple forests of
the Great Lakes region in primordial times. Some of the remnants of
native forests are preserved in parks or sanctuaries.
One such park is Presqu'ile Provincial Park (more or less
pronounced "Pres KEEL"; it means "almost an island"). Presqu'ile is
a small park surrounded by the waters of Lake Ontario and linked to
the mainland by a peninsula of land consisting of beach, wonderful
sand dunes studded with poplars and juniper, white cedar woods, and
cattail marsh. Within its boundaries this wonderful park contains
deciduous wood lot, some planted non-native evergreens, stands of
white cedar, meadows, sand beach, shingle beach, limestone
outcroppings, abandoned orchards, and extensive cattail marshes. It
also has commodious campgrounds and playgrounds. And it has
White-tailed Deer.
There is no doubt that within a year or two it will be decided
that there are "too many" deer. Their numbers are increasing each
year (although this winter some aboriginal hunters trying to assert
what they felt were their treaty rights were arrested after
illegally killed some 27 of the semi-tame deer). Wildflowers that
are eaten by the deer are decreasing, and so eventually a decision
will be made. While I can't predict the details, barring more
poaching I can foresee with confidence that the decision will be
made to kill a significant percentage of the deer within the next
few years. Similar decisions have been made for other small
provincial parks in Ontario, and for similar regions in many U.S.
states, particularly in the northeast and midwest.
I was the head naturalist at Presqu'ile nearly thirty years ago.
There were deer in the park then, but not nearly so many as are
there at present. Nevertheless even in those days we were told there
were "too many." Deer love to eat White Cedar and you could stand
back and look at stands of White Cedar and see no green foliage
beneath the level deer could reach when standing on their hind legs.
This area of defoliation is called the "browse line" and it seemed
to almost offend some of the biologists, as if it were "wrong."
A few years ago a massive windstorm swept through Presqu'ile and
blew down many of the older trees, opening up areas in the woods to
more sunlight, hence allowing increased regeneration. This
"blowdown" also provided ample food for White-tailed Deer.
Presqu'ile was on the very edge of a massive, long-lasting ice storm
last winter, which brought down still more branches and trees.
The woodlands of Presqu'ile look very different than the woods I
remember from my youth. And one of the main differences is the
reduction of a beautiful early spring flower called the White
Trillium. The White Trillium is the provincial flower and school
children are taught not only to identify it, but to leave it alone
as the whole plant will die if it is picked. It grows in great mats
that cover the woodland floor in early spring, before the overhead
canopy of leaves has emerged. Along with violets and Adder Tongues,
Dutchman's Breeches, Bloodroot, Mayapple, Jack-in-the-Pulpit and
other species, it helps to define the early spring to those of us
weary of winter and overjoyed at the arrival of such beautiful
manifestations of the long awaited end to winter.
Although there are a few trilliums left in Presqu'ile (contrary
to reports that they are gone) the deer have eaten most of them.
Removal of the part of the plant that is above ground kills the
plant. Deer also eat the saplings that struggle for life in sunlit
clearings created by past storms. The deer are changing the nature,
the very structure and appearance, of the woods. The openings the
deer unintentionally help to maintain can, unlike deeply shaded
climax forest woodland, be utilized by many non-native plant species
designated as "weeds." These are plant species that evoke none of
the joy to be felt at the sight of a carpet of trilliums, and are
species that, unlike delicate native plants, can be found in any
roadside ditch here or in many other parts of the world. As the
woods changes species of birds and other wildlife that require
wooded habitat fail to survive. All of this is seen as "wrong" to
those who value the woods as it was -- a place special to this
region as a remnant patch of a specific admixture of plants and
animals unique to this part of the world -- over what it is now
becoming, and who value the more vulnerable, rarer, native animals
and plants over the widespread "weed" species.
This process of alteration of the woods by the deer has been
called "an ecological disaster." Assuming you are reading this
because you care greatly for animals and what happens to them, you
might not agree that there is any such "disaster." You might even
prefer lots of deer and weeds and few or no trilliums. But before we
dismiss the concept of this being an ecological disaster, what if
the loss of wildflowers was entirely the result of vandals? What if
a motorcycle gang had moved in and destroyed wildflowers and
saplings? What if some industry decided to pick all the beautiful
wild flowers and sell them, and cut down saplings and leave
red-backed salamanders, star-nosed moles, American woodcock,
Whip-poor-wills, and other woodland wildlife species stranded? I
think we might suggest that such things not be allowed. Is it
different when the deer do it? To me it is fundamentally different
if the deer do it, but from the standpoint of the trillium, the
salamander, the mole, the woodcock, or the Whip-poor-will there is
no difference whatsoever.
And how long can it go on? No species can experience unlimited
exponential growth. It is ironic that humans, themselves undergoing
precisely such unchecked growth, should dare to point a finger at
any other species. In spite of all the wars and famines, diseases
and both natural and human-caused ecological disasters that so
affect us we continue to replace ourselves faster than we die off,
and inevitably there must come a reckoning.
Same with deer. Disease and starvation, lowered fertility rate
and migration to the mainland, and even some predation will all kick
in, eventually. In fact, one of the main reasons I have against the
lethal culling of these deer is the fact that it prevents such
natural controls from happening. By abruptly reducing the number of
deer we reduce the demands on the environment, making for less
competition within the species. Each surviving deer has more to eat
and thus the body reacts as though there is more available than is
the case. Mortality decreases, fertility increases, and the
"problem" continues. This, too, seems to be a difficult concept for
people to grasp, and we'll deal with it in greater detail at another
time.
The issue is more complicated than simply destroying enough deer
to allow restoration of the woods to something we, or some of us,
feel is more desirable than what the deer are doing. Habitats change
through time. One reason there are so many more deer now than before
is because the woods, having been protected from both fires and
logging interests, is much more shaded than it was before. Storms, a
definite part of nature, helped to open up the woods (just as fires
sometimes do). That led to conditions more favorable to deer as it
allowed increased new vegetation growth at deer-level. Furthermore,
deer on the mainland are hunted in the fall, and are exposed to
people and dogs and heavy automobile traffic. There may be heavy
die-offs of deer in winter. But, possibly as a result of global
warming (experts being divided as to whether or not human-caused
global warming is actually occurring, but whether it is or not the
fact remains that on average it is steadily growing warmer) the deer
are less challenged by winter cold than were their ancestors. And
the park, being a park, is a safe haven for animals moving into the
region from the mainland.
Change ...
Change is the only constant. The vast boreal forests to the north
of where I live have a timeless, eternal look to them, but in fact
they are of relatively recent origin. A mere ten thousand years ago
they did not exist, the whole area then being under glacial ice
sheets. The change has been enormous. In my own lifetime there have
been some quite astounding shifts in populations of birds and other
wildlife, usually in response to human endeavors. Many such changes
are have led to serious decreases, endangerment and even extirpation
[extirpation occurs when a population of a species is entirely
eliminated from a region, but is not extinct as members of the
species exist elsewhere]. Others have seen species spread into new
regions. And yet it is also understandable that we cling to "ideals"
as to what is or is not "right" for a given region. If deer are
eating plants that are the sole food of a given species of butterfly
found nowhere else in the region, should not the interests of the
butterfly be protected? It is the rarity, not the deer, and isn't
there enough endangerment, extirpation and extinction without us
standing idly by as the butterfly goes down the tubes?
Such questions are not academic. They go to the heart of some
management decisions where even the decision to do nothing is
nevertheless a management decision. I don't wish to over-generalize,
but at least in some instances I can say from experience that if
anything separates "environmentalists" from "animal rights"
advocates, it is the response such questions evoke. While the animal
rights advocate may claim not to be "speciesist," in the real world
I think many animal rights advocates would argue to lose the
butterfly on the grounds that it is letting "nature" take its course
-- an argument that conveniently ignores the fact that "nature," if
such is defined as processes not derived via human technology, had
nothing to do with the butterfly's plight. Conversely, and again not
wanting to over-generalize, I think on average most
environmentalists would, while acknowledging the "right" of the deer
would also recognize the "right" of the butterfly (and the plants)
and would place a higher value on the survival of any given species
than on the protection of one or more individual of any species. I
am not, for a moment, suggesting there may not be a third
alternative (on the contrary, I have fought all my life against what
I call the "final solution school of wildlife management" that turns
to killing as the resolution of such conflicts) for those willing to
search for one or commit the resources that may be required for
non-lethal responses to such dilemmas.
Watching All the Gulls Go By ...
Usually when someone says there are "too many" of this or that
species, it is because the species in question is doing something
that the person making the determination does not like. For example,
each summer the city of Toronto was inundated with inexperienced,
immature Ring-billed Gulls (invariably called "seagulls"). These
birds nest in large colonies along the waterfront. Their numbers are
increasing in the Great Lakes region. They are scavengers who
benefit directly from our own species' massive and increasing waste
production. And, they sometimes prey upon the eggs or young of "more
desirable" species of birds -- species that are fewer in number or
in decline (such as the Common Tern) and do not associate with human
beings, and are thus "more desirable." Gulls are everywhere and
easily taken for granted.
Many of the young birds failed to survive. It was not unusual to
pick them up in states of emaciation so advanced that the birds
literally lacked the strength to fly. Many were filled with
parasites or suffering from lung infections. Many wound up with
broken wings from an inability to dodge traffic or dogs or thrown
stones.
In short, it was agreed upon by most people voicing an opinion
that there were "too many."
And so the city engaged in a gull control program. The method was
simple. They simply removed the freshly laid eggs. Through trial and
error it was discovered that the gulls had low "nest site tenacity"
when they first started to lay eggs, but developed very strong nest
site tenacity thereafter. That meant that by chasing them and
removing eggs at the commencement of the nesting season the gulls
could be kept from nesting in certain areas and allowed to nest in
others.
The goal was not to destroy all the nests or eliminate gulls ---
far from it --- but to contain the city's major gull colonies and
thus control the size of the overall population. And it "worked."
There are still large numbers of Ring-billed Gulls in the city, and
there are still problems with young birds winding up starving or
injured, and there are still complaints about the mess gulls can
create. But it's "under control." There is a balance, if you will,
that satisfies most interests while not satisfying all interests,
from those of people like me, who would allow them to nest
unimpeded, to those who would prefer that there were none at
all.
The major nest site is a man-made landfill extending out into
Lake Ontario, so it might fairly be argued that having created the
place where the gulls can nest, we humans have the "right" to
determine where, upon that site, they should not be allowed to nest.
As an extra bonus the "more desirable" common terns have taken to
nesting on floating rafts covered with sand, provided by the federal
government specifically for that purpose, and from there have
re-colonized areas of the landfill that were previously occupied by
gulls who then displaced the terns.
While I would never have argued for the control (and, indeed, at
the time API waged a successful campaign to assure that the
Ring-billed Gull maintained its status as a species protected by the
Migratory Birds Convention Act, holding a one-day conference on gull
problems in conjunction with the Canadian Wildlife Service, with
famed naturalist Roger Tory Peterson as the guest of honor) neither
can I say that it has not achieved a workable compromise for all
concerned, including the gulls. To a much greater degree than the
marshes, stands of cedars and wood lots of Presqu'ile Provincial
Park, the city is a highly human-created environment, and the
control of gulls through egg destruction is analogous to, if much
less invasive than, the spaying or neutering of companion dogs and
cats. It is not my solution, but a compromise that is working
in a world where my esteem for all animals is far from
universal.
Too Many Sea Otters?
When I first heard complaints from abalone fishermen that there
were "too many" sea otters in California, I was incredulous. The sea
otter had nearly been wiped out by the fur industry of the 19th
century, but with careful protection and translocation had recovered
to what was still a shadow of its former size, but enough to
probably assure survival. How could there now be too many?
In purely materialistic terms, sea otters are a major tourist
attraction, at least partly responsible for a positive cash flow
into California coastal communities. The sea otter is the kind of
"charismatic megafauna" so well known and beloved by so many people
who can otherwise name or identify very few animals. But apart from
all of that the sea otter, unlike the human, has an absolute
requirement for such things as abalone, and other marine life, as an
essential part of its diet. And that diet is what helps maintain the
very environment that allows the sea otter and the abalone to live.
Yes, it's one of those food-chain scenarios whereby the sea otter's
prodigious appetite for prolific sea urchins keep the sea urchin's
population from consuming all the kelp, which provides the kelp
forests that are the nutriment-rich starting point for many food
chains that help support the sea's rich biomass, which, in turn, is
source of income for many people (too many people, in fact; there
simply aren't enough fish to supply all human demand).
In Alaska depletion of salmon stocks by human fishermen plus a
reduction of sealions has forced orcas (also known as "killer
whales") to shift feeding habits to eat more sea otters which in
turn has led to sea urchin proliferation that, in turn, destroy kelp
beds which, in turn, support food-chains that feed salmon and other
fish that feed the humans who take too many fish in the first place.
It is not that there are "too many" orcas; their numbers are
probably well below primal levels. If there are too many of anything
it is humans who have, unlike any other species, access to
technology that allows them to take far more of the world's living
biomass and waste far more than any other species can come remotely
close to doing. But it's easier to say there are too many orcas than
to take responsibility for our own excesses. It's easier to blame
sea otters for declines in abalone if you like to dive for abalone
off California's coast on the weekend and don't want to stop doing
so.
Even the Mediterranean monk seal, a critically endangered
species, is still a species of which there are "too many," according
to some fishermen in the Mediterranean.
It is hard to think of a species that is common enough to be
noticed that has not been declared "too many" and therefore needful
of control. Everyone loves robins, but I wonder how many people,
including us vegetarians, drinking cranberry juice or eating
cranberry sauce give a thought to the thousands of robins killed by
the cranberry farmers because robins also eat cranberries?
Crows, red foxes, coyotes, elk -- even the American Bison --
there are somewhere "too many."
Are You Bothered By Too Many Coots?
As I type these words, January 1999 is about to close. It was in
this same month that Merit Property Management, in Mission Viejo,
California, decided that there were "too many" American coots in the
lake that is within the Sam Lark Housing Development.
Before I tell you what was done about it, I want to briefly tell
you about American coots.
Coots are shaped a lot like a duck and do a lot of swimming, but
instead of having webbed feet, they have flattened lobes on their
toes, a rather cool arrangement as the lobes compress, to reduce
resistance, as the foot is moved forward in the water, and then
splay out, to offer as much resistance as would webbing, when the
bird pushes back, thus providing propulsion. The plumage is softer
than a duck's and mostly a lovely dark, sooty gray, becoming velvety
black on the head and neck. The beak is snow white with a couple of
maroon dots, and continues up onto a "frontal shield" that covers
the forehead. The iris of the eye is dark red, and the bird has a
permanent droll look. The American Coot is totally innocuous,
although if you hold a coot he will kick out with his great feet
with surprising vigor. In the wild, when a predator nears a flock of
coots, they dive off in all directions with much noisy splashing in
an instinctive effort to confuse the enemy. They usually don't try
to take to the air because to do so they have to run along on top of
the water, rapidly churning those great feet, until they become
airborne, and at such times they are certainly vulnerable to an
attack by a hawk or eagle.
In the spring they pair off to nest, in wetlands throughout much
of North America, particularly in the prairies. They have complex
displays of mating and fighting. While the latter involves much
splashing and kicking, it draws no blood. Coots are particularly
noted for laying their eggs in each other's nests.
The pairs seem to mate for life, or until one is lost and
remating occurs. Their chicks are black, with bright red heads and
bob about like corks in the company of their parents.
In the winter American coots may migrate, some going as far as
South America or Hawaii, or they may stay in the general area of
where they nested, but they tend to move from reed beds or cattail
stands out into open water, forming flocks.
One such flock of 200 was wintering on the lake at the Sam Lark
housing development. That was deemed "too many." And so, with the
legally required blessing of the federal government, they were
poisoned. They would have moved off the lake soon, had they been
left alone. The migrate in late winter to breed, perhaps locally,
perhaps some dozens, hundreds or possibly thousands of miles away.
The lake was ornamental and it's hard for me to imagine why anyone
would not be pleased with the sight of these rather amusing-looking,
quite vital and utterly harmless birds. There were the usual
concerns about bacteria counts, but the lake was not used for
swimming, and unless one drank from it or ate uncooked coots or fish
from it, it's hard to see that there would be any serious problem.
No such problems, so far as I know, were recorded.
The arrogance of the God-players is boundless and is universal.
The same fishing industry that is responsible for the catastrophic
collapse of what were once incredibly vast populations of cod and
other northeast Atlantic fish stocks quite blithely says there are
"too many" harp seals, eating "all the fish." American coots;
African elephants; American alligators; mountain lions; great white
sharks; alewives; muskrats -- too many; too many; too many.
The Wolf at the Door ...
The wolf is of particular interest to me because it seems to
exist in one of three circumstances as far as public opinion is
concerned:
One: there are too many; Two: it is endangered; Three: it
is extinct.
Everywhere the gray wolf (or the endangered Red Wolf of the
southern U.S.) exists, it can be argued that people are screaming
that there are "too many" unless it is "endangered." Even then,
putting some back into the environment, as is being done with the
Gray Wolf in Yellowstone National Park, Wyoming, or the Red Wolf in
North Carolina, still means "too many" wolves for some people.
And where I live, in Ontario, where the Gray Wolf is most
certainly not endangered, there are constant concerns that there are
"too many."
A Deer Swallow Tale ...
One of the favored propaganda tactics of the final solution
school of wildlife management is to argue that lethal culling is for
the animals' own good. If animals are "out of balance" or there are
"too many," the claim goes, they will starve or contract disease and
this is much less humane than simply shooting enough to reduce or
even eliminate the likelihood of that happening.
But they are highly selective about what species engender such
"humanitarian" concerns. More than a dozen years ago there were
serious concerns about "over"populations of White-tailed Deer at a
place called the Peterborough Crown Game Preserve, in eastern
Ontario. A lethal cull was proposed amid dire predictions of mass
starvation of the poor deer. Hunters just itching to get at the
deer, who had, being protected, become quite tame, were positively
lurid in their ghastly descriptions of what would happen if the
population was not "controlled." I was almost alone (although I did
actually have one or two hunters on my side -- they really hated the
idea of shooting such tame animals) in going to the area and arguing
against the lethal cull that had been proposed.
I had done my homework. A site visit had revealed that there was,
indeed, a "browse line" below which there was little vegetation, but
to me that meant that the deer had the option to move elsewhere, and
that survivorship would depend on the ability to survive under such
circumstances. I was shown some white cedars not eaten by
deer, and this, too, might well be a trait "selected for" as the
cedars also evolved within the context of an environment that
included deer. But I also traced records of significant winter
"starvation episodes" of the species in the scientific literature
and discovered that when there were such episodes, they happened
whether or not the population had been reduced by fall hunting --
usually as a result of exceptionally bad weather. On average it
appeared to be something that happened about once every seventeen
years, or so, or about once every several deer generations.
I presented all that information at a public hearing, being
subjected during the process to crude jokes and veiled threats by
numerous potbellied men in flannel shirts of camouflage coveralls.
During a break in the proceedings a deer biologist who had been
publicly arguing against me took me aside and told me to "keep it
up"; that I was right. Somehow the lethal cull was stopped. I had
won, but I wondered if I would be subjected to a barrage of "I told
you so's" if, in fact, there was a massive deer starvation that
winter.
There wasn't, nor has there been to the present day.
I mentioned, above, the Tree Swallows whose nests sometimes usurp
those of the much rarer Eastern Bluebird. The Tree Swallow is, where
I live, the first of the swallows to return in the spring. In fact,
of the six species of swallow who nest in Ontario, the Tree is the
one whose wintering grounds are the closest to their northern
breeding grounds -- as near as the Carolinas or Georgia. Although
they are typical swallows with long wings and swooping flight that
allow them to be masters of the air who feed on flying insects, they
also have evolved an ability to eat small berries, and this allows
them to stay in the continental U.S. during winter.
Just as the early bird gets the worm, the early swallow -- the
first ones to return in the spring -- finds the choicest nest sites.
This gives such birds an advantage over late arrivals. However,
winter does not end abruptly and sometimes, after the earliest
swallows have arrived, the weather turns cold again, or perhaps a
blizzard sets in.
I recall from my childhood opening the top of a bird nest box and
looking in, and seeing about eight tree swallows huddled in the
bottom for warmth, their eyes closed. No nest competition here, the
birds had gone into a "communal roost" in a desperate struggle take
advantage of each other's warmth to survive.
And they had lost. They were all dead. The cold weather had
prevented there from being enough insects to feed them. The amount
of energy expanded searching for food and keeping warm was simply
much greater than the amount taken in from what, if any, food was
found.
Dead swallows were found in nest boxes and tree cavities
everywhere, in the early weeks of that cold spring, but a few weeks
after that you there were plenty of Tree Swallows around -- birds
who had migrated a bit later. The later arrivals had an abundance of
food and choice of nest sites. The early migration strategy usually
works for the species, but sometimes it does not.
That's how nature works.
No one has suggested that, in order to protect the swallows, we
should kill half of their population, or any at all. If we reduced
the population in such fashion, swallow mortality would go down,
because there would be fewer swallows. The fact is, wildlife
managers and government agencies don't much care as what happens to
individual swallows provided that the species is not endangered.
There are lots of Tree Swallows.
Mr. MacKay Goes to Washington ...
When I began this essay, I was going to talk about the plans to
cut in half the central population of Snow Geese. We, at API, are
currently fighting hard to prevent that, as we're being told there
are "too many" Snow Geese by some (not all) scientists and
bureaucrats.
In this same month -- January 1999 -- that they killed 200
American Coots at the Sam Lark Housing Development, Mission Viejo,
California, my Canadian colleagues, Ainslie Willock and Dr. Vernon
Thomas and I were scheduled to meet with the U.S. Fish and Wildlife
Service. The meeting was to be on Friday, January 15, the very last
day of the public comment period for response to the proposal to
initiate a country-wide mass increase in the killing of snow goose,
because there were "too many." The concern, as explained elsewhere
(see The Great Goose
Hoax), is that the geese are eating too much vegetation in the
far north, where they breed. Dr. Thomas, a university professor of
zoology who has studied snow geese in the north for many years,
disagreed, as did other scientists, naturalists, and, perhaps most
tellingly, the native people of the region who depend on wildlife
for much of their food and have lived there for thousands of
years.
The U.S. Fish and Wildlife Service had steadfastly refused to
provide a reasonably high level meeting, and when it finally did,
there was simply not enough time to get native leaders from the far
flung regions of Canada down to Washington. Indeed, nature played a
hand by bringing on a massive snowstorm that closed the Toronto
airport. The airport dug out, but another, larger storm was on the
way. Our original plan was to fly down for a meeting with the
Council on Environmental Quality on Thursday, the 14th, and then
meet with the government the next and last day. But with the storm
coming on Ainslie and I made a quick decision to leave early. Dr.
Thomas, with student exams to administer, could not leave a day
early. And so Ainslie and I left Wednesday night, ahead of the
storm. Dr. Thomas managed to make his way to the airport the next
day, but, as predicted, it was shut down by the blizzard.
And so Ainslie and I were in Washington on Thursday, the 14th,
with time on our hands before our first meeting, late in the
afternoon. That is when I decided to visit Martha, or what is left
of her.
Martha died on September 1, 1914, in the Cincinnati Zoological
Park. She was the very last known Passenger Pigeon. Her skin,
artfully stuffed and mounted, in on display at the Smithsonian
Institute. Nearby there are quite a few more Passenger Pigeons,
stuffed and mounted, on display, many in dioramas that replicate
their appearance in the wild. It's not surprising that there are so
many specimens of an extinct bird; after all at one time the
Passenger Pigeon was, by far, the most abundant of all birds on the
continent. You can understand how people would have thought that
there were far "too many."
Just to give you an idea of how many there were, one flock,
estimated to be 240 miles long, was also estimated to consume at
least 17,423,000 bushels of nuts and acorns -- per day! That is what
I would call an environmental impact! The birds were slaughtered by
the millions, but that was not enough to exterminate them. They were
shipped to cities for food or fed to hogs or simply used for manure,
and while the slaughter was massive, it, alone, was not enough to
account for their eventual complete disappearance.
I'm sure that at least someone, back in the 19th century, must
have worried about the fate of the species. But surely if any such
person spoke his or (more likely) her concerns aloud, it was only to
be called foolish. Everyone could see that there were simply
billions too many Passenger Pigeons.
We also had a look at the only mounted Guadalupe Caracara I've
ever seen in a museum. Caracaras are large, hawklike falcons found
only in the New World. Unlike other falcons they have are not great
flyers, preferring to take carrion or weak prey they can kill with
their strongly hooked beaks.
The Guadalupe Caracara was very different from the Passenger
Pigeon in that it was found only on Guadalupe Island, off the west
coast of Mexico. The island is an arid, desert island but some
people, back in the 19th century, thought it would be a good place
to raise goats. They were concerned, however, that there were "too
many" caracaras. It was possible that the Guadalupe Caracara could
eat into profits by eating into newly born kids -- baby goats, that
is. And so they were controlled by shooting. A scientific collector
who landed there around the turn of the century collected quite a
few specimens, apparently not realizing how rare the bird had
become. At any rate, by about 100 years ago, the species became
extinct.
I wonder if, among the goat herders, anyone was concerned about
the caracaras. If so, I'm sure they were considered foolish.
The island turned out to be a lousy place to raise goats (big
surprise!) and soon after the Guadalupe Caracara was extinct, the
island and the goat-herding venture were abandoned.
The Smithsonian Institute also has a diorama display of stuffed
and mounted Carolina Parakeets, flying about in synthetic snow,
designed to show that how they once lived. The Carolina Parakeet is
the only parrot species native to eastern North America. I suspect
that as colonists planted corn and orchards the parrot numbers may
have increased, as this was food they loved. The parrots cut into
profits and so there were "too many." Fortunately for the concerned
colonists, the parrots were attractive both as pets and as game
birds. They were taken into captivity and they were shot for sport
and food in order to control the population.
I know a few folks were worried but such concerns were of little
use to the parakeets, as by the time it was realized there were no
longer "too many" the species was obviously endangered. No one knows
quite when it became extinct. There were rumors of birds seen as
late as the 1930s and even the early 1940s.
The next day, with colleagues of the Humane Society of the United
States, we met with the U.S. Fish and Wildlife Service to explain
why we felt that there were not "too many" snow geese. It was not to
our surprise that we were told how foolish we were.
While we were in Washington D.C., we received, via telephone, an
excited call from back home. Word had been leaked to our friends
that the Ontario government would very soon announce an end to the
spring black bear hunt. It is an issue that has preoccupied Ainslie
since 1995 and we at least had that to celebrate.
Well, the announcement was, indeed, made a few days later. That
does not make it law and at the moment, as I conclude this column,
the outfitters of Ontario are up in arms fighting to have the
government back down. Just four days ago I received a phone call
from a member of the hand-picked government's wildlife advisory
board (all pro hunting and fishing types) dramatically telling me I
would have "blood on your head" as the outfitters who guided mostly
American hunters to kill bears were so ruined by the government
decision that at least some would doubtless commit suicide. It would
be all my fault.
Today, Saturday, January 30, 1999, as I complete this
Opinionatedly Yours column, the local newspaper is filled with
letters, pro and con the government announcement. Of course none of
the ones who are opposed to the spring bear hunt ban (not yet
legally in place) discuss the orphaning of cubs, which is the issue
the government claims is responsible for the decision. Shooting
female bears in spring has been illegal but hunters can't always
tell the sexes apart and sows with dependent cubs sometimes will
send the cubs up a tree before entering a bait site, looking as
though they did not have dependent young. The only mention of cubs
by the pro-spring hunt group is either to deny that any are orphaned
or to claim, with logic I can't quite follow, that because cars and
male bears kill cubs it somehow doesn't matter anyway.
But of course, the another major and even more illogical argument
made in defense of the spring bear hunt is that there are "too many"
bears, and the hunt is required to "control" the population and keep
their numbers down for the safety of us tree-hugging, berry-picking,
bird-watching, Bambi-loving, Granola-bar-eating city folk who might
wonder into the woods next summer and turn up on a Black Bear's
menu. (The likelihood of that happening is less than the likelihood
of dying from a bee sting, and with 90,000 people killed by other
people to every one iced by a bear, I'll still take my chances in
the forest, thank you very much.)
Most hunters who come to Ontario to hunt bears in spring come
from the U.S., from places like Michigan and Pennsylvania, where, I
suppose, there were also once "too many" black bears, but where now
there are not enough.
Oh, Mrs. Brown: I don't know what ever became of you, but what a
lesson you unintentionally started to teach me that day you held a
harmless little goldfinch in your hand and wondered if, in fact,
there were "too many" American Goldfinches. Long may they chirp and
twitter and glow in the summer sun in whatever numbers there
are.
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