A small, soot-colored pelagic bird characterized by a prominent white rump and a unique habit of 'walking' on the ocean surface while foraging.
Generally silent at sea; at nesting colonies, it produces raspy, rhythmic chattering and soft, repetitive 'gr-gr-gr' vocalizations.
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