Listening to a Continent Sing

A fox sparrow. I like the last two notes on the third song (C)--they sound much like the piik piik notes of an American robin. I hear that song four times among the 14 songs here, and a study of the sonagrams shows that he sings in the sequence A B C B D C B A C D B A B C.

Background

Dark-eyed juncos, sapsucker drum (e.g., 0:17, 0:54) and calls (e.g., 1:50), Empidonax (1:00), hermit thrush, wind off the Cascades

Photo by John Van de Graaff