The
Capture of Eagle #V31
By Peter Nye
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Eagle
V31
with Peter Nye and Kathy Michell
Photo: Gene Weinstein
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February
5, 2003
1:58 am: Country music. I really don't like country music. That's probably
why I have my clock-radio tuned to it, so I get up quickly and shut it
off. I smell the coffee-maker already at work, thankfully. Fill the thermos,
gather up the gear and on the road by 2:30. With the help of some metal
and alt-rock (more to my liking), the 2 1/2 hour drive to the Mongaup Bald
Eagle Preserve goes by quickly.
My eagle-technician,
Kathy Michell, and I meet up at the spillway of Swinging Bridge Reservoir,
haul all the gear out on the ice, place a fresh, new deer carcass and
set up our rocket net. Back in the truck at our remote observation point
on the dam by 0600, still a half-hour away from dawn. All must be in
readiness before the first eagles leave the roost at first light, with
no sign of humans, or forget eagles coming to our bait. The day is actually
fairly mild, considering the sub-zero temperatures we've been having
over the past couple of weeks.
The wind,
however, worries me. It is breezy, with occasional strong gusts; gusts
that could easily send our net sailing away from our target at the last
second. This day, February 5th, is our second trapping day this year.
Kathy and
I spent a long, 17-hour day on Martin Luther King Day trapping also,
another very windy day where despite having dozens of crows feasting
on our deer offering, not a single eagle ventured to the ground. Those
kind of days can get to you, but are all part of the game: you've got
to put in your time.
Today was
to turn out to be different. 0630. Barely light, but two immature bald
eagles come flapping up the valley from their roost, over the dam in
front of our windshield, and on up the frozen reservoir. Today we will
see a minimum of 15 immatures and 8 or so adult bald eagles. Many of
the eagles in this popular wintering area are New York State birds I
have banded as nestlings over the years, evident by the sky-blue leg
band they wear, signifying them as "New Yorkers." We also regularly
see birds from other states: purple-banded birds from Michigan, black-banded
birds from Connecticut, and gold-banded birds from Massachusetts.
Our goal today
is to avoid any of these birds: we want to capture an unbanded, adult
bald eagle, hopefully from Canada, so that we can outfit it with one
of our satellite radio transmitters to continue our research into migration
pathways, origins and fidelity of our wintering eagles.
6:40 am: Three
more eagles fly upriver and over the dam. At least we have eagles around
today.
7:15 am: Crows
arrive in numbers from their roost, and begin having breakfast on our
deer; a good sign!
8:05 am: The
sun is just beginning to break over the eastern ridge behind us now,
and our eagle count is now up to at least 12 birds.
8:50 am:.
An immature bald lands on the ice about 30 yards from the bait, and begins
walking slowly toward it. This is very typical bald eagle behavior: rarely
does a bald fly right down to a carcass and begin feeding. They are very
wary and careful. Fortunately, the lure of crows devouring the morning
offering is too great, and by 9 am, the first eagle is on the carcass
and feeding.
9:12 am: By
now, three immature balds are feeding (and squabbling) at the carcass.
9:30 am: Our
coffee mugs and snacks are quickly put aside: a large adult has just
come to the carcass and begun feeding. We're excited. Kathy is glued
to the spotting scope affixed to her window, to determine if we should "fire" on
this bird and when. Just as we are getting the remote firing box ready,
she tells me: "blueband". Darn ! So we wait, and watch this
large adult gorge herself on our offering. Notat all bad, as she is sure
to attract attention from the other resident birds. Over the next 45
minutes, up to 7 immatures and 3 adults visit and fight over the carcass,
jumping, flapping and flying at each other, talons outstretched, in an
attempt to dominate the food. Too many eagles and too scattered around
to safely shoot the net. So we wait, and watch.Kathy has determined that
a small adult, one of the birds on the carcass, is unbanded and a good
target. We continue watching, and waiting for our opportunity.
Photos
of the capture process from a previous year. |
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Eagles
at deer carcass
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Rocket
net
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Deployed!
Was an eagle captured?
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10:40 am:
Four birds on the carcass now, two immies and two adults, our "small" adult
among them. Kathy holds the radio-controlled firing box out her window
and awaits my command, for the moment when all birds are centered on
the bait and engrossed in their feeding. "Pull", I say, and
Kathy pulls the toggle switch down to the firing position. A loud bang
and lots of smoke: too much to see through and besides, we need to get
over to the set ASAP. The truck is already lurching, somewhat wildly
across the dam. We skid to a stop just above the spillway, bolt out and
slide down an ice-covered chute used to drop deer carcasses down to the
spillway. This is a great spot for a broken arm or leg, but the excitement
predominates and we are soon running across the spillway toward our now
outstretched net and the four eagles caught safely underneath. Success!
With only two of us, the removal takes awhile, but goes smoothly. The
eagles are extracted and crated up one by one for processing. Our "small" adult,
now known as V31 with satellite transmitter #12359, indeed turns out
to be unbanded and a male.
The other
adult, the one Kathy originally identified as a blue-banded bird (and
still feeding!), turned out to be F70, an eagle I banded as a nestling
at one of our New York nests about 40 miles away in 1998. Since this
is a female and just approaching 5 years old and sexual maturity, we
hope the radio transmitter we placed on her will lead us to a new nest
later this spring.
By 1600 all
eagles had been processed and released, net repacked, gear removed and
loaded back in the truck, and we head home, Kathy to hers and me to mine.
A long day, but happily, a successful one. You don't mind putting in
such hours when things work out the way you want. V31 roosted right in
the Mongaup River roost that night, just below the dam and along with
all the other eagles on the area.
How long will
he stay at the Mongaup? Where will he go come spring? I'm as anxious
to find out as you are!
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