A life bird at the experimental farm
January 9th, 2010
Today's excitement occurred at the Central Experimental Farm. I was walking
down Ash Lane and spotted a big assemblage of crows in a field, swirling
around and cawing. As a serious birder, one of the first lessons you learn is
"follow the crows." And I'm going to take a long aside here to tell you a few
things about crows.
There's a lot of mythology around crows. Tricksters, vagabonds, thieves.
Playful in a wild sort of way. People talk about "crow energy", and what those
are like who have "crow energy."
They giggle, leaning into each other, tottering back and forth on their
perch, crow girls, can't be touched, can't hardly be seen, except
someone's standing down there on the sidewalk, looking up through the
falling snow, his worried expression so comical it sets them off on a new
round of giggles. (Charles de Lint, "Crow Girls")
After years of studying crows, it is my opinion that 99% of this is piffle.
Ravens? Yes. I'll buy ravens as tricksters. I've seen ravens dive and
somersault in the air. Seen a raven get chased off by crows, land in a tree
and sit there, looking around, croaking quietly, as if to say "who, me?" Once,
on a misty winter morning, a raven into voice imitations had me for all the
world convinced that there was some exotic species of goose up ahead, and as
soon as I came through the mist I would see it. I walked on, looked up, and
there was my exotic goose, perched on a power line. "Who, me?" So I do buy
ravens as tricksters.
Crows? No. Here are some of the adjectives I would use to describe crows.
- Military
- Determined
- Disciplined
- Precise
- Tribal
- Territorial
Crows patrol their territory. All day long they're on the lookout: hawks,
falcons, owls, ravens--in breeding season, foreign crows--in sum, any birds
that pose danger to them or their young, and any birds they see as competitors
for resources. When they find such a one, they call in reinforcements,
surround the offender, and hound him relentlessly. And I'm not just being cute
when I say "call in reinforcements." Crows' caws encode information. They may
all sound the same to us, but to them, a caw can say anything from "found some
food" to "looking for a mate" to "we have a problem." That's why when one crow
finds a problem, twenty more soon materialize.
They're far too intelligent to actually attack. (That's one thing the
mythology gets right. Crows are smart.) A crow against any raptor will come
out the worse for it, and besides, they don't really want to hurt the thing.
They just want it to get lost. Their job is to make that bird's life
miserable. They do this primarily via noise, also by rushing and diving,
veering off at the last minute before they're in range of the talons. If the
raptor finally tires of it and flies off, then the crows are at the advantage,
and they fly after him to drive him out of their territory: the door's that
way, adios muchacho. One by one, like fighter jets, they swoop down and peck.
*bam*. *bam*. *bam*. There's actually a rhythm to it sometimes.
Military.
There's nothing nasty about crows. All that they do, they do to survive. It's
true that at times, crows will harass a bird that poses little danger and
little competition--a small hawk for instance, and even in winter when there
are no crow nestlings for it to hunt. This too is understandable. Coyotes pose
little danger to humans, in theory, but would any of us tolerate it if one
ambled into our home? A crow's territory is his home, and he defends it
admirably.
Which is why birders in the know follow the crows.
Ravens and crows are usually enemies. Crows will drive a solitary raven out of
their territory. But every now and then you find crows and ravens joining
forces, and that's when you know something big is going down. Probably a large
owl. Because a large owl--a
Great Horned Owl,
especially--is about the most dangerous thing there is to crows. When night
falls, he'll pick a sleeping adult right off its perch. That's danger enough
for crows to put aside their animosity for ravens and welcome the
reinforcements.
So it was today. Amidst the swirling assemblage I could see and hear multiple
ravens. Their attention all seemed to be focused, strangely enough, on a piece
of farm equipment sitting on the ground. They perched on and around it; they
dove at the ground near it. I couldn't see anything where they were diving but
a little lump of snow.
I walked into the field and headed directly for them. And finally I got close
enough that the little lump of snow resolved--to my great pleasure and
surprise--into the head of a
Snowy Owl! There was a
depression in the ground under the equipment and he was standing in it.
Snowy Owl is the second largest owl in North America. It is bigger than a
Great Horned Owl, which, as you'll recall, crows are terrified of. Snowies
breed in arctic tundra, where they feed, preferentially, on lemmings. In
winter some of them wander south, favoring grasslands, fields,
shores--basically, anything that resembles the treeless landscape whence they
came. On their wintering grounds they'll prey on voles (which they can
pinpoint by sound even under deep snow), mice, rats, other small mammals,
ducks, and in a pinch, anything they can get their talons on.
My first thought was to be worried. Though I knew this was a bird of open
country, who was accustomed to perching on the ground, he was literally
surrounded by over a hundred crows and ravens and looked awfully vulnerable,
with only his head peeking out. Was he trapped? Was he injured? I continued to
walk towards him hoping to scare away the mob. (Yes, despite my great respect
for crows, I will favor the survival of Snowy Owls. They're not endangered but
they easily could be.) As I drew near, he quickly hopped out of the depression
and flew away. Turns out he was just ignoring the crows, but he wasn't about
to ignore something the size of me! Sorry about that, fella. I meant well.
I then tromped back and forth through unpacked snowy fields like the madwoman
I am for about the next hour, following the crows who were following him. This
species was a first for me and I always go cheerfully crazy with first
sightings, when I can. He kept moving on, usually not because he dignified the
crows with a reaction, but because some human came too close (there were lots
of dog walkers out that day.) Often I couldn't see him, but could pinpoint his
location at the epicenter of the storm of crows--and then I'd see him right
away when he flew.
Finally, just across the road from the arboretum, he came to rest under a
small tree and stayed there. The crows, either because they were tired out or
because they considered him out of their territory, gave up the chase. A few
stragglers perched in the tree and shouted down at him for a little while, but
then they too flew off, leaving him alone in blessed silence.
The owl was still quite visible when I left from the #3 bus stop. Yes, after
an hour of tromping through fields, I tracked him right back to the bus stop
where I would have ended up anyway. It is to laugh.
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Virginia Vacation Pix
December 21st, 2009
Some photos from my recent trip to Virginia.
Slate-Colored Junco
Female Eastern Bluebird
Eastern Bluebirds are rare and specialized in Ottawa. The grasslands south of
the airport are one of the few places where we can still find them. In the
southern states, though, they're ubiquitous year-round suburban birds. This
one was perched in front of someone's Christmas decorations.
Come June, I'll be bringing my zoom lens to Virginia, and then to Outer Banks,
in summer, for the first time. I look forward to getting pictures of male
bluebirds in their vivid breeding dress, and many others besides.
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August To September
December 17th, 2009
eclipse male Mallard - August 9
Black Squirrel - August 25
Bitter Nightshade - September 19
White-Breasted Nuthatch - October 15
Green-Winged Teal - November 17
male Mallard - December 12
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Sumac Buffet
December 13th, 2009
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Windy Day
December 12th, 2009
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Who's a voyeur?
November 27th, 2009
I'm currently visiting my folks in Virginia. Virginia weather is just bizarre
sometimes. Today we're alternating between fair weather, rain, and
hail. Hail at 12C, mind you--and sometimes falling out of a sunny blue
sky with just a few wispy white clouds overhead.
My mother, aunt and I found a few precipitation-free hours this morning and
went out to Dutch Gap, a conservation area on the James River. The wintering
Ring-Necked Ducks
were in their usual place, milling around on the marsh along with Canada
Geese. In the same area was one of the coolest things I've seen in three years
of this hobby. Two Bald Eagles were perched on a bare tree. Then one of them
flew over to the other, hovered, landed on top, and started mating! Noisily
and enthusiastically, I might add. I was fortunate enough to find a break in
the trees and get four good photos before they separated. We were practically
jumping up and down (actually my aunt was
literally jumping up and
down) with excitement.
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Sunset Teal
November 20th, 2009
Some sunset pix of those beautiful teal at Andrew Haydon Park.
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November Gold
November 19th, 2009
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Scaup are some of the most numerous diving ducks in North America. Their usual
habitat is lakes, bays and large rivers, but the Lesser species is sometimes
less-than-finicky about its migration stopovers. This one was on the pond at
Andrew Haydon Park, swimming close to shore as he foraged among mallards and
teal.
The strange, patchy plumage is due to him molting out of eclipse.
Here's what
he'll look like when he's done.
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Who's That?
November 18th, 2009
My only clear view of this
Red-Tailed
Hawk was from behind. But he improved matters for me when he got curious
and looked back.
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Where I come from (Virginia), Red-Tailed Hawks are
the hawks, and I see
them everywhere, including in deep woods and peoples' back yards. Here, I find
them only in their preferred habitat: grassland and farmland (though sometimes
very small tracts of grassland), where they hunt the small rodents that form
their staple diet. This one was on the experimental farm. My theory is that
there are more of them in Virginia, so some have to settle for less-than-ideal
habitat.
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Up Early
November 15th, 2009
These two mallards were up early enjoying the sunrise, while their flockmates
dozed and scratched themselves.
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