An odd duck, and the upside of forest fires
October 23rd, 2012
I had read on Ontbirds that a super-rare female Tufted Duck was being seen at Shirley's Bay. This is a Eurasian species that has only strayed into our area once before in recorded history. So I headed down to the boat launch parking lot, joined a large group of birders with scopes, and had a look. Success!
Of my three lifers yesterday, this is one I kind of have to call a technicality. The female Tufted Duck doesn't share the male's obvious strange hairstyle. The only thing to distinguish her from her new-world counterpart (Ring-Necked Duck) is a teeny little nub of feathers on the back of the head. I saw the duck, and I saw the teeny nub. But no way by myself would I even have noticed, much less thought it significant, much, much less confidently identified her on the basis of it!
Bob Cermak, one of the local experts, was there. As I was about to leave, I overheard him tell someone that a Black-Backed Woodpecker had been reported at Lime Kiln Trail, and my ears perked way up. Black-Backed is one of the two boreal woodpeckers that are seldom seen in Ottawa, and had never been seen by me. So I immediately hopped in my car and zipped over there, where I intersected with Bob's group and ended up falling in with them.
There was a forest fire at Lime Kiln Trail earlier this year. A forest fire is generally seen as an unfortunate thing. But for certain birds, and for the birding world, it's actually a big positive. Birds, like other creatures, evolved in the presence of natural fires. They have ways of dealing with it. Some have even evolved to specialize in burned-over areas, for various reasons--maybe because they like the resulting open habitat, or because they prefer to dig their nest holes in burnt trees, or because their preferred insect prey specialize in burns. Naturalists call them "fire followers."
A lot of those birds are in trouble now. Unfortunately evolution is blind, and didn't know that humans were going to come along and devastate the "fire follower" niche. Fire prevention policies have even driven a few species to near-extinction. (The tide is now being turned in some cases via the use of prescribed burns.) Burn sites are at a premium, so when a new one appears, it's a given that interesting birds will show up there. An old burn site in Constance Bay, for instance, is Ottawa's only known location for breeding Red-Headed Woodpeckers: a single pair of them. Lime Kiln Trail, or at least part of it, is now such a site, and assuming the city leaves it more or less alone, it could remain so for years.
The Black-Backed Woodpecker report was recent and news to all of us, but as we explored the site, it became clear that the species had been there for months, and probably more than one of them. The telltale sign of boreal woodpeckers is bark stripped off of dead trees. They eat a special kind of beetle larvae that tunnel under the bark. There were trees in those woods that had been more than half de-barked. Trees with heaps of bark piled under them.
I wasn't the only one who was kicking myself that I hadn't thought of it sooner. I knew about fire followers. And I had been planning on going there in spring, searching for Red-Headed Woodpeckers, Olive-Sided Flycatchers and others. It just didn't occur to me to do it in fall.
So we fanned out over the burn site, pored over every promising tree, listened carefully for the sound of slow tapping, and came up empty. Tons of Downy and Hairy Woodpeckers, the most I've ever seen in one place (clearly burn sites are of interest even to some birds that don't specialize in them per se), but no Black-Backed.
Damned if I was giving up. I went home, had lunch, showered, and went back out solo. This time I found it! Specifically her--a female. Which proves that there is at least a pair, since the original report was of a male. Have they bred? Will they breed? I can't wait to find out.
I have no pictures as yet, since she flew off before I got the chance to close in on her. But I'll be back to try again.
ETA: Success, photos here!
This autumn has been like magic. So many surprises. This afternoon, twenty-four Sandhill Cranes were circling on thermals practically right over my house. I wonder what else it has in store?
A day of jawdrops
October 22nd, 2012
Little did I know, waking up this morning in a foul mood, that it was going to be a three-lifer day and my mood was going to get entirely turned on its head.
One lifer was this little guy:
A Northern Saw-Whet Owl. And I do mean little. At 7-8 inches tall, shorter than a red-winged blackbird, this is the smallest owl in eastern North America. (Smaller ones still occur out west, including the ~5 inch Elf Owl that nests in cactuses.) For comparison, the common Great Horned Owl is up to two feet tall.
I was searching for this bird, having heard about him from another birder on the trail. I have chickadees to thank for finding him. You've probably heard the chickadee-dee-dee call before. When there are only a few "dees" to a "chick", it's just a standard "heads up" that can be used for any number of reasons (including "hey, a human is here. Lets see if she'll feed us.") But when you hear something more like "chickadee-dee-dee-dee-dee-dee-dee", it means there's a raptor around. A recent study showed that the more dees there are, the more threatened the chickadee feels. A small raptor like a Saw-Whet Owl, just the right size for catching and eating a tiny chickadee, is a major threat indeed. So when I heard a "chick" followed by ten "dees", I figured I was getting warm.
I've read that when chickadees make these calls, it's a call to arms. They're inviting other chickadees to join forces, mob the raptor and drive it away. (If the raptor is currently in flight and thus a present danger, the calls are different: very high pitched peeps that mean "lay low, guys.") But I'd never seen this in action before. I'd seen crows mob, blue jays mob, but I'd never seen chickadees do anything more than make noise. Until now. Suddenly the calls became louder, faster, more insistent--like a chickadee war whoop--and then they converged on a tree and started hopping up through the branches. I looked up to where they seemed to be headed, and there he was, sleeping away! He blinked groggily as the chickadees surrounded and fussed at him, then nodded off again. I would have liked to get a shot of him with his cute googly eyes wide open, but was unwilling to disturb his sleep to do it.
Unfortunately, owls at known roosts face a lot of harassment from unscrupulous photographers. For this reason I'm not publicizing the location.
Continued in next post!
Indian summer
October 18th, 2012
In a matter of a few days, we went from flurries to t-shirt weather! And guess who came out to bask in the sun?
1680x1050 wallpaper
Diners at Shirley's Bay
October 12th, 2012
A few recent customers at the Shirley's Bay feeders on Hilda Road.
1680x1050 wallpaper
White-Crowned Sparrows are migrating through right now. I think they are one of North America's most handsome sparrows. We only see them in Ottawa in spring and fall--they breed well north of us.
"Seriously, this is it? This is the famous Shirley's Bay bird smorgasbord?"
"Oh...you mean this was for the birds?"
( More (White-Breasted Nuthatch, White-Throated Sparrow) )
Pileated Woodpecker and fall colors
October 11th, 2012
It's been awhile since I've posted one of these. The fall colors at Jack Pine Trail made for a lovely backdrop.
1680x1050 wallpaper
Pink Lake
August 22nd, 2012
Took my mom hiking at Pink Lake in the Gatineau, and took the landscape lens along for a change.
1680x1050 wallpaper
Under the right conditions, Pink Lake is a deep, turquoise green, like something you'd expect to see in the tropics. It can be hard to capture the color on camera (my camera anyway), but it did come out in this one:
Trivia courtesy of www.canadascapital.gc.ca:
"With no oxygen at the bottom of Pink Lake, there is only one organism that lives in its depths--an anaerobic prehistoric organism. It is a pink photosynthetic bacterium that uses sulphur instead of oxygen when it transforms sunlight into energy.
Pink Lake is also home to the three-spined stickleback fish, a saltwater fish left behind by the Champlain Sea that used to cover the region. This little saltwater fish adapted to the lake's gradual desalination and today lives in the lake's fresh water."
Contentment
July 30th, 2012
1680x1050 wallpaper
White-Faced Meadowhawk
July 24th, 2012
Meadowhawks are the small, cherry-red dragonflies that appear in abundance in late summer. This is one of the most common ones.
The second picture is an interesting action shot. The meadowhawk appeared to be eating some sort of pupa, a tiny cocoon no larger than its own head!
Amber on violet
July 16th, 2012
European Skippers, an introduced species. These pretty skippers can be very abundant during their flight time. The flowers they're nectaring on, cow vetch, are also a European import.
A youngster in the meadow
July 14th, 2012
Found this darling off Watts Creek Trail last week.
1680x1050 wallpaper
A shot with mom:
|