nest has been heard joining in the chorus of a number engaged in the cackling and clambering round about her.
(129) Garrulax leucolophus belangeri.
The Burmese White-crested Laughing-Thrush.
- Garrulax belangeri Less., Traité d'Orn., p. 648 (1831); Blanf. & Oates, i, p. 79.
Vernacular names. Wa-youn-hnet, Way-oung-hnet-goung byu (Burmese).
Description. Differs from the preceding in having the white of the breast running into the abdomen instead of being sharply defined by the rufous colour. The colour of the upper parts is a light ferruginous- rather than an olive-brown.
Colours of soft parts as in leucolophus.
Measurements. A rather smaller bird than the last, with a wing of about 125 to 130 mm.
Distribution. Yunnan, North and South Shan States, Annam, Lower Chin and Kachin Hills, Pegu and Tenasserim.
Nidification. Similar to that of the last bird, twelve eggs averaging 28·3 × 22·7 mm.
Habits differ in no way from those of the last or the next bird,
(130) Garrulax leucolophus diardi.
The Siamese White-crested Laughing-Thrush.
- Tardus diardi Less., Traité d'Orn., p. 408 (1831) (Slam).
- Garrulax diardi. Blanf. & Oates, i, p. 79.
Vernacular names. None recorded.
Description. Differs from the other two races by the grey of the crest merging into the rufous back instead of contrasting therewith. The whole of the abdomen is white.
Colours of soft parts as in the other races.
Measurements. The largest of the three races with a wing between 135 and 140 mm.
Distribution. Extreme South Yunnan, Siam, Cambodia, Annam, Cochin China, rarely extending into South-East Tenasserim, and then in a somewhat intermediate form approaching belangeri. The specimens in the British Museum from the Shan States and Annam labelled "diardi" should all be referred to the last race, belangeri.
Nidification. Similar to that of the other races. Twelve eggs average 27·4 × 22·4 mm., but a larger series would probably average bigger.
Habits. Like those of the other races but this form appears to be found well into the plains.
