Listening to a Continent Sing

Still another white-crowned sparrow of this local dialect. He sings from an aspen just a few feet away, 15 essentially identical songs over three minutes.

Here's a quick comparison of the songs of these three neighboring white-crowned sparrows: MT-269, MT-270, MT-271.

Background

American robin, an air-borne swallow (tree swallow?), sapsucker drums, ruffed grouse drum (0:59, 3:05--nice "eastern species"; with a second drumming grouse in the distance--best seen in sonagrams along the baseline, a challenge to actually hear), female elk in distance, mountain chickadee, ruby-crowned kinglet, MacGillivray's warbler, warbling vireo.

Photo by Robert Royse