352 THE COMPLETE WILDFOWLER 
but slightly smaller in size. The adult in winter has the throat 
white, tinged with grey. 
SCLAVONIAN OR HORNED GREBE 
Podiceps cornutus (Gmelin) 
The Sclavonian Grebe is a northern species, and is a strag- 
gling autumn and winter migrant to the British Islands. It 
inhabits the Northern Nearctic and Palzarctic regions, and 
visits our shores, especially in the east, annually. In the 
north of Scotland it is quite common. Ireland is also regularly 
visited on migration by it every year. 
In summer the upper parts of the adult male are dark 
brown ; the crown, forehead, chin, and neck-ruff black, and 
a tuft of elongated feathers on each side of the head chestnut ; 
upper plumage, deep brown. Secondaries white, except the 
three outer ones, which are dusky like the primaries; neck, 
breast, and flanks yellowish chestnut; remainder of under 
parts white. In winter the crest is absent; the under parts 
are white. The young resemble their parents in winter 
dress. Length from 12 to 13 in. ; wing 5°5 in. 
BLACK-NECKED OR EARED GREBE 
Podiceps nigricollis (C. L. Brehm) 
This is a southern Grebe, stray visitors of which are met 
with occasionally in spring and sometimes autumn, and there 
is evidence that it may have nested with us on more than one 
occasion. It is rarely found in Scotland and Ireland. 
The adult in spring has the head and neck black with 
a triangular patch of yellowish chestnut feathers on the ear- 
coverts ; upper parts dark brown; under parts white; flanks 
chestnut. All the secondaries white, and the four innermost 
primaries also show much white. Bill black and slightly re- 
