There’s always some excited anticipation ahead of a day’s birding, and for the Vancouver Christmas Bird Count (CBC) in Area G in Burnaby, it comes in two types: what birds will we find, and what will the weather be like? The latter, I guess, is more trepidation than anticipation. We’ve had some brutal days of rain and snow over the years on this count. It can make counting birds an endurance test rather than a pleasant day birding.
The weather forecast in the week preceding the count was consistently bad: Sunday, December 20, would see a front sweep in from the Pacific and give us a good soaking all day long. Yuck! A regular day’s birding can be postponed, but not a CBC. It’s the designated day and out we go, storm or sun.
And out we went, and wouldn’t you know it, the sun shone! The Jet Stream had slipped direction overnight, the storm roared though while we slept, and the morning dawned to scattered clouds, blue sky, and sun. Augury for a good day, perhaps.
Note: you may view larger images of all pictures with single click on each.
Not only do the forests and fields look better and brighter in the sun, the birds are much more active, show themselves more readily, and are more vocal. Identifying birds by their calls is particularly important on a Christmas Bird Count. Because there’s not time to get a visual on each one, calls count: One towhee, another Song Sparrow, a Pacific Wren… and on we go, listening and tallying as we walk.
With teams at Burnaby Lake and Deer Lake, we were set for a good count. Good weather and skilled counters make a difference. Not only was the weather change a surprise, but the Burnaby Lake group was in for another just as we started counting. Stepping up to the bank of Eagle Creek to begin tallying the ducks, a bobcat burst out from under the creekside salmonberry canes, almost right under our feet, and bound across the base of the spit giving everyone a close, but fairly fleeting look in the daybreak gloom – too fast for any of us to capture a picture. Was it sleeping there, or waiting for duck breakfast? Possibly both.
I know; it’s a Christmas Bird Count. So what’s with the mammals? Well, a day’s birding is always enlivened by other wildlife seen, and the bobcat wasn’t our only bonus wildlife sighting. As we birded Phillips Point on the north side of the lake, we watched a family of river otters fishing just a short distance off-shore.
Burnaby Lake and Deer Lake parks are in area ‘G’ of the Vancouver CBC. Although area ‘G’ covers a lot of territory, we focus most of our counting efforts on the two parks, but also spend time along other sections of the Still Creek corridor. At the end of the day, we count the crow roost along Still Creek. This year we tallied 7000 Northwestern Crows, but it was a difficult count this year because the crows entered from multiple directions. Our count involved a lot of estimation, and therefore was conservative.
So how did we do? As the headline suggests, we set a new species record for the count. Seventy-two species, beating last year’s total of 69. We also had high counts of a large number of species for the count. We recorded three new species since I started keeping detailed records for the count in 2001: Redhead, Lincoln’s Sparrow, and Pine Grosbeak.
Redhead, a species of diving duck, is a rare bird for Deer Lake at any time of year. Seeing one on the CBC makes it an added bonus. If you’d like to see it for yourself, the bird seems to have taken up residence on the lake. I went down today to get a few photos and it was easily observed from the boardwalk along the north shore of the lake toward the west end.
Lincoln’s Sparrow is a dapper little sparrow that overwinters in the Lower Mainland in small numbers. This bird is not new to the count. We’ve recorded them in the 1990’s, but it makes the highlight list because it’s not been recorded since 2001.
Based on my detailed records and memory, Pine Grosbeaks have not been recorded previously in area ‘G’ , but have been seen for the past two years on Burnaby Mountain. In fact, there are around 20 birds up there now near Horizon’s Restaurant, and easily observed. We saw five of them near Sperling and Glencarin feeding on Pacific crabapples, a favourite food for many wintering birds such as finches.
Among the many high counts we recorded, I would highlight American Coots (207), which may have finally re-established their large wintering flock on Burnaby Lake following the completion of the lake dredging in 2011 that seemed to disturb their traditional wintering location.
Perhaps benefiting from the deeper water produced by the dredging, there now seems to be a good sized winter flock of Common Mergansers (66) on the lake.
A bird that continues a long-term upward trend is the Cackling Goose (261), a smaller relative of the Canada Goose that at one time was considered just smaller type of Canada Goose, but is now recognised as a species in its own right.
The high counts of gulls, Glaucous-winged (181) and Ring-billed (76), I think are related to the transfer station on Still Creek Avenue where our curbside collected food waste is handled. Most of these birds were counted on the beach at the east end of Deer Lake. Watch the gulls over the course of the day, and you will see a continual stream heading to and from the lake where they fly in to rest up, bathe and preen. They then head out again to the north west, in the direction of the transfer station where there is always a substantial gull flock. The gulls don’t feed on the lake; they feed at the transfer station.
Another high count was Green-winged Teal (340), which find the muddy mouths of Still and Eagle creeks where they flow into Burnaby Lake, particularly good habitat.
Here’s a link to see the full count from the day. Green indicates new to the count this year, high counts are in red.
So why did we break the record two years in succession? A combination of factors led to this fantastic result. We had good weather both years; we had a group of skilled counters in the field, and there were birds somewhat out of their usual ranges – further south or north, or up in the mountains. Good food supplies locally and poorer ones further north and in the mountains (heavy snowfalls), contributed to birds moving here, and staying.
Examples of somewhat out of range birds are Cedar Waxwings, usually found further south but finding a good Pacific crab apple crop locally. Common Redpolls from the north may not have the normal cone crops on which they depend, and Pine Grosbeaks may have been driven down from higher elevations for the easier pickings at lower elevations.
Birds like the Redhead are just serendipitous outliers from the Interior where they are quite common in winter. Such is the fun of Christmas Bird Counts.