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Hemiprocne
Treeswifts or crested swifts are a family (biology), family, the Hemiprocnidae, of aerial near passerine birds, closely related to the Swift (bird), true swifts. The family contains a single genus, ''Hemiprocne'', with four species. They are distributed from India and Southeast Asia through Indonesia to New Guinea and the Solomon Islands. Treeswifts are small to medium-sized swifts, ranging in length from 15 to 30 cm. They have long wings, with most of the length coming from the length of the flight feather, primaries; their arms are actually quite short. They visibly differ from the other swifts in matters of plumage, which is softer, and they have crests or other facial ornaments, and long, forked tails. Anatomically they are separated from the true swifts by skeletal details in the cranium and palate, the anatomy of the tarsus, and a nonreversible hind toe that is used for perching on branches (an activity in which true swifts are unable to engage). The males have iridescen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemiprocne Coronata
The crested treeswift (''Hemiprocne coronata'') is a species of tree swift. It was for some time considered the same species as its eastern relative, the grey-rumped treeswift, gray-rumped treeswift (''Hemiprocne longipennis''), but they do not interbreed where their ranges overlap. It is distinct in flight, with long, bowed wings and a deeply forked tail that usually appears narrow and pointed. Description The crested treeswift is a large slender bird at 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. Young birds have a dark grey head and wings but the feathers are edged in white and the rest of the soft plumage is much streakier than th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |