ANATIDZ—DUCKS. 201 
webs ; irides hazel-brown. Length 20 to 21 inches; culmen 
1°43 wing 10°25; tail 4°6; tarsus 1°3. 
Adult Female: Head and neck buffish-brown, marked 
with blackish ; feathers on upper parts brown, margined with 
buffish-brown ; wings dusky-grey, some of coverts tipped with 
white ; speculum dull grey, not metallic ; under parts below 
chest white, shaded with brownish-buff on flanks ; under tail- 
coverts barred with dark brown. 
Adult Male (Summer) : Head and neck as in female ; 
back darker, some of feathers obscurely vermiculated ; wings 
as in winter, but having the coverts chiefly grey ; many of 
back and scapular feathers margined with fulvous ; chest and 
flanks ferruginous-brown ; under tail-coverts grey, blotched 
with black. 
Young in first plumage: Do not conspicuously differ 
from adult female ; males may be recognised by the metallic 
wing-speculum and females by the grey and white of upper 
parts being replaced by brown and buff (Seebohm). 
Distribution: Found throughout most of the Palearctic 
region and sparingly in the Nearctic. 
Habitat: Fresh waters or marshes inland; also the sea- 
coast. 
(DIVING DUCKS), 
Genus FULIGULA. 
POCHARD. 
Fuligula ferina (Zzvz.). 
Adult Male : Head and neck chestnut ; chest and fore part 
of back brownish-d/ack ; back, wing-coverts and breast greyish- 
white, finely vermiculated with dark grey ; upper and under 
tail-coverts black ; wings and tail dull greyish-brown ; wing- 
speculum grey ; lower abdomen washed with dark grey and 
closely vermiculated ; bill pale blue in centre, black at base 
and tip ; legs and feet bluish-grey except membranes which are 
black ; irides orange. Length about 18 inches ; culmen 22505 
wing 8°4; tail 2°75; tarsus 1°5. 
Adult Female: Fore parts buffish-brown ; throat whitish ; 
