The genus Tephrodornis contains a few arboreal Shrikes of a grey colour. They are more or less gregarious, occurring in small bands of from four to six individuals, more rarely in pairs, and they never descend to the ground, nor do they catch insects on the wing. These Wood-Shrikes search the leaves of trees and they are only found in forests or in well-wooded localities.
In Tephrodornis the bill is very strong and about three quarters the Length of the head, strongly hooked and notched ; the nasal bristles or hairs are very numerous and entirely conceal the nostrils; the wing is blunt; the tail short and square and the feet feeble. The feathers of the rump are exceedingly ample and their shafts are soft. In one Indian species the sexes are alike, in two others slightly different. All three species are resident.
Key to the Species.
a. Tail almost entirely brown; wing considerably over 4 inches.
a1. Head grey; back ashy brown………………T. pelvicus, p. 473.
b1. Head and back uniform bluish ashy………………T. sylvicola, p. 474.
b. Outer tail-feathers white; wing considerably under 4 inches………………T. pondicerianus, p. 475.