Crested Treeswift
Hemiprocne coronata
The crested treeswift is a large slender bird at 23 cm (9 in) length. This species is dove grey above and white below. The long swept-back wings are a darker grey above. This treeswift has a crest and a long, deeply forked tail. The adult male has orange cheeks and ear coverts with a narrow streak of white under the eye and a trace of a white supercilium. The female also has a thin white stripe below the eye running below the grey cheek and ear coverts.
ID text from Wikipedia, CC BY-SA 4.0
Whiskered Treeswift
Hemiprocne comata
Medium, unique white elongated 'whiskers' above and below eye, shaggy crest, deeply forked tail, sexes similar. Male lores black; two elongated white 'whiskers', one above eye from forehead extending past nape; ear chestnut; rest of head and throat, tail, upper and underwing coverts, and primaries dark metallic blue. Each secondary has a large white spot on inner web; back to uppertail coverts, breast and upper belly bronze olive; lower belly and undertail coverts white. Female lacks chestnut ear. Immature plumage not known. Bill black; eye dark brown; legs purplish brown.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Crested Treeswift and Whiskered Treeswift.