The
Northwestern Crow is a very close relative of the much more widespread
American Crow. By appearance
alone, it is nearly impossible to differentiate the two species, although
the Northwestern Crow is slightly smaller on average than the American Crow.
The two species are most often distinguished by geographic range, as
Northwestern Crows are only found in coastal areas of Northwest North
America. There are also slight differences in calls between the
species, with the Northwestern Crow having a somewhat hoarser and lower
cawing call than the American Crow. Given the extreme similarity
between Northwestern and American Crows, and given that the two may
interbreed where their ranges overlap, there are many who think the
Northwestern Crow is just a subspecies of the American Crow.
Habitat: Found near the coast, often right along
the coastline on rocky shorelines, beaches, and wetlands. They will
also use habitats near coastlines for foraging.
Diet: Omnivorous. Common food items include
crustaceans, mollusks, fish, carrion, insects, eggs, fruits, nuts, seeds,
and berries. They will also feed on carrion and refuse.
Behavior: Does most foraging while walking along
the ground, but they will use a variety of foraging techniques, dependent
upon food opportunities.
Nesting: The nest of a Northwestern Crow is a
platform of sticks, mud, weedstems, and bark fibers, placed in the fork of a
tree branch, or occasionally on the ground, particularly on offshore islands
where predators are not an issue. The female lays four or five eggs,
and she alone incubates them. When the eggs hatch, both parents help
feed them, and the previous year's young sometimes also assist the parents
as "helpers". The young leave the nest after about a month.
Song: Hoarse caw call. Considered
to have a hoarser and lower-pitched call than the American Crow on average.
Migration: Considered a permanent resident
throughout their range.
Similar Species:
Very similar to American Crow, safely
told apart only by geographic range.
Conservation Status: There are currently no major
conservation concerns for the Northwestern Crow. They are found over a
wide geographic range, and are common in many areas.
The IUCN lists the
Northwestern Crow as a species of "Least Concern".
Photo Information: Photo taken in August 2010 near
Homer, Alaska - Terry Sohl