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Length 17cm. This species is only little known and a positive identification in field is difficult.
 Similar Species
Breeds very locally in NE India. Recent record from Bhutan and one record in Myanmar. Winters probably in N Thailand, but records from there may also represent an unknown breeding population.
Forms a superspecies with Pacific Swift and was also considered to be a subspecies of it.
Regarded as monotypic, but birds from Thailand may represent a distinctive subspecies. Described subspecies rupchandi usually not accepted.
Found around cliffs and deep gullies. The Khasi and Lushai Hills are in a very wet zone with over 11m of precipitation per year.
No information about food and feeding or behaviour.
Breeds colonially in spring from February to May on ledges and fissures in cliffs. Builds a cup-like nest, using grass and feathers which are agglutinated with saliva. Lays 2-3, sometimes 4 eggs.
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