The Blackpoll Warbler is a small songbird famous for its record-breaking transoceanic migration and high-frequency song. It is a boreal specialist that undergoes a dramatic plumage transformation between the breeding and non-breeding seasons.
A very high, thin, mechanical series of 'tsee' notes delivered on a steady pitch, typically increasing and then fading in volume.
Open Birdsong, tap record, and identify the bird singing near you in seconds — then collect it in your field journal.
Identify a bird by its song