342 BRITISH BIRDS 



with a half-collar of short white streaks; sides of nock striped with 

 black and white ; under parts white. 



This diver breeds in small numbers on the west coast of Scotland 

 and in the Outer Hebrides. To other parts of the country it is an 

 accidental visitor. It is less oceanic in its habits than the last 

 species described, and goes to a greater distance from the sea to 

 breed. Two eggs are laid, similar in colour to those of the great 

 northern diver. 



The reel-throated diver (Colymbux aeptentrionalis) is the smallest 

 of the three species, its length being twenty-three inches. It lias 

 the head, throat, and sides of the neck mouse-colour ; crown spotted 

 with black ; neck marked with black and white lines ; on the front 

 of the neck a large orange-coloured patch ; back dusky brown ; 

 unier parts white. 



This species breeds in the west and north of Scotland, and in 

 the Hebrides, Orkneys, and Shetlands. 



Great Crested Grebe. 



Podiccps cristatus. 



FIG. 116. GREAT CRESTED GREBE. J- natural size. 



Crown and crest and ruff dark brown and chestnut ; cheeks 

 white ; upper parts dark brown ; secondaries white ; under parts 

 silky white. Length, twenty-two inches. 



