Listening to a Continent Sing

The persistent daytime zee zee zee zee zee zoo zree of a black-throated green warbler, with almost always five relatively pure-toned zee notes, followed by a single low tonal zoo note, then the buzzy zree on the end. Well into the morning now he utters no chips between songs, well after he's abandoned his zree zree zoo zoo zree dawn song (see VA-61).

Background

The persistent singing of a golden-crowned kinglet (see OR-337). And, at 1:57, every so faintly, what sounds like the single call of a Swainson's thrush!

Photo by John Van de Graaff