Here are a few photos from recent ramblings.
After delivering some books to Tualatin River NWR, I took a quick walk on the path that leads through some newly planted oaks and along the river. This male American Kestrel had just captured a shrew.
Westmoreland Park, in southeast Portland, is always worth a quick visit in winter.
Westmoreland is also a good spot for studying the various subspecies of the white-cheeked goose complex. This is a Taverner’s Cackling Goose, identified by her medium bill (covered in down for some reason), blocky head, and pale breast.
Western Canada Goose bathing
It is time for another installment in the constant effort to separate Lesser Canada Goose (Branta canadensis parvipes) from Taverner’s Cackling Goose (Branta hutchinsii taverneri). The two species overlap in size and coloring, but structural differences are often apparent to those of us nerdy enough to study lawns covered in geese.
Here are two Western Canada Geese (B. c. moffitti) and a Lesser Canada Goose. They are nearly identical in color and shape, but the Lesser is about 2/3 the size of the Western. This is your best clue to identifying Lessers.
Compare these Taverner’s to the Lesser. On a Taverner’s Cackling Goose, the neck appears thicker and often shorter. The forehead forms a noticeable bump where it meets the bill. (This causes the bill to appear stubby, but there actually isn’t much difference in the bill shape between the two species.) The breast on Taverner’s is often lighter in color than that of Lesser Canada, but both species show a lot of individual variation.
It’s time for another installment of my attempts to sort out the Canada/Cackling Goose complex. I recently had nice views of a Lesser Canada Goose (Branta canadensis parvipes).
This bird stood out from the nearby Western Canada Geese by the slightly darker barring on his upper breast. Some populations of this subspecies are considerably darker than this.
Compare these Taverner’s Cackling Geese (Branta hutchinsii taverneri) to the Lesser Canada. Taverner’s Cackling has a uniformly thick neck and shorter bill. Notice how the wing tips extend just beyond the end of the tail. Canada Geese have shorter wings.