SUB-FAMILY, Hirundininae

SUB-FAMILY, Hirundininae.

The bill is short, flat, nearly triangular, compressed at the tips, with a slight emargination ; the culmen gently bent at the tip, but not hooked; the gape is large, without any rictal bristles-; the wings are long and pointed; the two first quills generally equal, sometimes the first longest; the primary quills are nine in number, the secondaries moderate, covered at the base only by short coverts ; the tail is various, even in some, or only slightly emarginate, deeply forked in others; the tarsi are short; the feet small; the middle-toe lengthened, the lateral toes nearly equal, and the claws short, slightly curved, acute and slender. The tarsus is occasionally feathered, and in some the toes also ; these last, like the Swifts, have a tendency to revert the posterior toe ; their plumage is soft, dense, and glossy.

Handbook to the Birds of the Bombay Presidency
Barnes, Henry Edwin. Handbook to the birds of the Bombay Presidency, 1885.
Title in Book: 
SUB-FAMILY, Hirundininae
Book Author: 
Barnes, H. Edwin
Page No: 

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