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GENUS PETROCOSSYPHUS (Jock-Thrushes) 
Have longish straight bills, with the tip curved; tail long 
(usually). Birds which frequent rocky localities and scrub jungle. 
(351) PErrocossyPHUS CYANEUS, Blue Ltock-Thrush, is occasion- 
ally seen in Darjeeling. In winter it descends to foot of the hills 
where they appear to congregate. They are shy and faithless. It 
has a sweet melodious sort of warble, which approaches in richness, 
some of the rich songsters in this family. Cyaneus is about 8% 
inches in length; plumage of the male is dull indigo blue, spotted 
with darker tints, which effect is caused by dark edgings to tips of 
the feathers; under tail-coverts and lower parts are tipped with a pale 
brownish tinge; irides are deep brown. 
GENUS OROCETES 
These are Chat-like birds in general appearance, and habits not 
a little. They can safely be called Saxicoline Thrushes; wings are 
short, 3rd quill longest; rictal bristles more developed ; bill short- 
ish, straight, curved at the tip. 
(352) OROCETES ERYTHROGASTRA, Chesnut-bellied Thrush, is one 
of our permanent residents in Darjeeling. In winter these birds 
are frequently observed ; in spring they are much in evidence. This 
richly marked thrush is seen usually on the tallest trees, at times 
it descends to the land to forage. It has a fine clear melodious song. 
In the district, or about Darjeeling the only two other species of 
Meruline which excel in song Hrythroqastra, is the next, the Little 
Blue-headed Chat-Thrush and (361) Grey-winged Blackbird. Ery- 
throgastra’s song is frequently heard in spring. It seldom seems to 
care to expose itself, to the gaze of an unsympathie world, usually 
it is either securely hidden away among dense foliage or perched 
high upon a tree. One or two pairs have taken up their abode on 
trees at the head of the upper road leading to the house, and make 
free use of the hill side to forage for worms and caterpillars. In 
bright spring mornings their song is particularly clear and melodious. 
This species is 95 inches; plumage of the male is deep, prominent, 
chesnut on the breast and under parts; above, it is bright blue on 
the head, shoulders and lower back ; duller blue on the back, wings 
and tail; sides of the head, neck and remaining portions of the 
bird are black ; bill is black ; irides deep brown. 
(353) OROCETES CINCLORHYNCHUS, Blue-headed Chat-Thrush, is a 
smaller bird than the last, being about 74 inches in size. In build 
and habits it is more Chat-like. In winter it migrates to the plains 
and returns early in spring, looking fresh and brushed/up. Like 
