Genus CAMPOPHAGA

The genus Campophaga comprises a number of species the predominating colour of which is grey. The shafts of the rump-feathers are spinous as in Pericrocotus and the next genus.

In Campophaga the bill is comparatively weak, the tip being but slightly bent down and notched; the nostrils are nearly concealed by plumes; the wing is rather pointed, and the tail well graduated.

The Cuckoo-Shrikes of this genus are strictly arboreal, going about in small flocks and feeding on insects which they pick off leaves and branches. The sexes differ: in three species very slightly, in two very markedly.

Key to the Species.

a. Of larger size; wing exceeding 4.5 inches.
a1. Grey of plumage at all ages dark bluish; under tail-coverts in adults concolorous with abdomen………………C. melanoschista, p. 491.
b1. Grey of plumage at all ages pale; under tail-coverts in adults white or albescent………………C. melanoptera, p. 492.
b. Of smaller size; wing barely exceeding 4 inches.
c1. Supercilium absent or faintly indicated; wing about 4 inches.
a2. Throat and abdomen in adult uniform grey………………C. neglecta, p. 493.
b2. Throat in adult black, abdomen grey………………C. sykesi , p. 493.
c2. Throat and abdomen white, cross-barred with brown………………C. sykesi 5, p. 493.
d1. A conspicuous white supercilium at all ages; wing about 3.5 inches………………C. terat, p. 495.

The immature birds of the first three species here treated of resemble each other closely and pass through the same phases of plumage. In the nestling each feather of the upper plumage has a white terminal transverse bar preceded by a narrow black bar; the quills and coverts are tipped with whitish, and the whole lower plumage is closely barred with white; most of the primaries have each a white patch. The young are probably two or more years in attaining the adult plumage. This is effected by a gradual loss of the bars and of the spots on the primaries, perfectly plumaged adults losing both of these entirely. The female is much longer in passing through all the stages than the male, and perfectly adult females are rare.

BookTitle: 
The Fauna Of British India including Ceylon and Burma
Reference: 
OATES EW. The Fauna of British India, including Ceylon and Burma. Vol.1 1889.
Title in Book: 
Genus CAMPOPHAGA
Book Author: 
Eugene William Oates, Edited by William Thomas Blanford
Year: 
1889
Page No: 
490
M_ID: 
18379
M_SN: 
Coracina
Volume: 
Vol. 1
Term name: 
id: 
686

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