SuB-FAMILY CAPRIMULGINAS 
The true Goat-suckers have small, weak and flexible bills; wing 
long; tail long; lateral toes short, middle toe long ; claws, 1ner 
margin pectinate ; hind toe short, reversible in some species. 
Genus Caprimulgus, bill, broad at the base, short, compressed and 
tip bent; strong and mumerous rictal bristles, which aid them, to 
hold the insects, these birds are on the hunt after. ; 
(107) CArprimutaus INpicus, Zidian Night-jar, is frequently met 
with at low elevations in the district and in Sikkim. This species 
is bigger than Frog-mouth, being about 12 inches in length. In the 
long summer evenings these night-jars are often heard, more so when 
near dense forests. Its song is refreshing and pleasant to the ear, 
a sort of few-yo-yo, tew-yo, tew-yo-yo. It is however one of those 
bird-land songs which are difficult to transpose. Jndicus is light 
ash in colour, with black streaks on the feathers ; quills dull chesnut 
with spots and bars. 
(112) CaprimuLeus AstAticus, Common Indian Night-jar, is well 
known and plentiful throughout the plains. It frequents scrubby 
jungle, groves and gardens. Its note is not unlike the croaking of 
frogs in a marsh, or a stone skidding over a frozen pond, a sort of 
tyook—tyook—tyook:. 
Famity TROGONIDAE 
We have one representative of this beautiful group of birds, the 
pride of many a tropical forest. The bill is shortish, strong and 
curved from the base, a bit triangular; gape wide; longish bristles ; 
wings short ; tarsus short ; toes short ; tail typical, long and broad ; 
plumage soft ; neck short. 
(116) Harpactres Hopasont, led-headed Trogon, is found in the 
thickly wooded parts, between 4000 to 5000 feet elevation. It is 13 
inches in length ; tail 75 inches ; plumage of the male is dark crimson 
and scarlet richly marked on the breast, head, neck and throat ; 
ferruginous-brown on the back, scapulars and upper-tail coverts ; a 
little black and white on the wings ; quills black with some white 
on the primaries ; tail chesnut, tipped black, a few of the outer 
feathers with white. The female lacks the deep crimson on the 
head, neck and breast. These few, more typical markings will help, 
to distinguish this handsome bird together with its prominently long 
tail, composed of feathers grading in lengths. The bill is smalt blue; 
irides chesnut brown ; feet and legs pale lavender. These, Trogous 
are seen to perfection in their silvan retreats, at about 2000 to 4000 
