The genus Garrulax differs from Dryonastes in having fewer bristles and hairs covering the nostrils, which are clearly visible. The feathers of the head are in most species long and ample, and in some are developed into long crests.
At first sight the White-headed Laughing-Thrushes appear to be divided from the rest of the genus by their fine crests and by the fact that they lay eggs of a totally different character to those of the other genera. Now, however, that Mr. J. Stewart has taken many nests of G. delesserti in Travancore, it is found that this bird, though in other respects like the species which lay blue eggs, lays round white eggs, exact miniatures of those of G. leucolophus. All the species within Indian limits lay unspotted eggs, either blue or white.
Key to Species and Subspecies.
A. Crown and crest white.
a. Upper breast white, distinctly defined
from rufous of lower breast and
abdomen G.l. leucolophus, p. 146.
b. Breast white, merging into rufous of
abdomen G.l. belangeri, p. 148.
c. Breast and entire abdomen white G.l. diardi, p. 148.
B. Crest not present, crown not white.
d. A well-marked black pectoral band.
a1. A black cheek-stripe.
a2. Tips to tail white G. p. pectoralis, p. 150.
b2 Tips to tail buff G.p. semitorquata, p. 151.
b1. No black cheek-stripe.
c2. Tips to tail white G. m. moniliger, p. 151.
d2. Tips to tail buff G. m. fuscata, p. 152.
e. No pectoral band.
c1. Chin and throat yellow G. gularis, p. 152.
d1 Chin and throat white.
e2. Tail eutirely black G. delesserti, p. 149.
f1 Tail tipped with white.
a3. Darker G. a. albogularis, p. 158.
b3 Paler G. a. whistleri, p. 154.
e1 .Chin and throat chocolate-brown .. G. strepitans, p. 154.

The Fauna Of British India, Including Ceylon And Burma-birds(second Edition)
Baker, EC S (1922–1930) The fauna of British India including Ceylon and Burma. Second edition. vol.1 1922.
Title in Book: 
Book Author: 
Edward Charles Stuart Baker
Page No: 
Vol. 1
Term name: 

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