辨識
由 MERLIN 技術支援
Large swift with a dark body, long scythe-shaped wings and a square-tipped tail. Resembles White-collared Swift, but has an incomplete and misaligned white collar like a white bib and may have a paler face. Roost and nest in caves and waterfalls where it returns at dusk after foraging over the surrounding landscape.
由 MERLIN 技術支援