COLYMBID.&. PODICIPEDID.E. 61 



b 358. BLACK-THEOATED DIYEE. Colymbus arcticus, Linnaeus. Breeds 

 locally in N. of Scotland, migrating southward in winter. 



Adult : spring. Chin and throat black, with a purple gloss, divided by 

 a patch of white with black lines ; iris red. 



Winter. Like last, but smaller. Length 25 inches. 



359. RED-THEOATED DiYEE. Colymbus septentrionalis, Linnaeus. / Q 

 7 Breeds in N. of Scotland and Ireland. 



Adult : spring. Throat grey, with lower part chestnut-red. 

 Winter. Above ashy grey, speckled and spotted with white, most so 

 in the young ; underparts white. Length 21-23 inches. 



PODICIPEDIDJE. Feet with lobes; no true tail. 



360. GEEAT CRESTED GEEBE. Podicipes cristatus (Linnaeus), 

 v Resident. 



Male : summer. Crown and tufts black ; tippet round face chestnut, 

 with black edges. 



Female. Rather smaller ; crest and tippet not so much developed. 



In luinter these ornaments are scarcely present in the adult male, less 

 so in the female, and absent in the young; all have white eye-stripe. 

 Length 20-24 inches. 



f 361. RED-NECKED GEEBE. Podicipes griseigena (Boddaert). Autumn 

 to spring. 



In summer. Crown, nape, back of neck black ; chin and throat grey ; 

 neck in front chestnut-red ; no tippet ; bill black, base of bill yellow. 

 In winter. Keck in front grey ; no eye-stripe. Length 16| inches. 



362. LESSEE CEESTED or SLAVONIAN GEEBE. Podicipes auritus 

 ) (Linnaeus). Autumn to spring ; not known to breed in British 

 Islands. 



Bill straight. 



In summer. With tuft of lengthened chestnut feathers on each side 

 of head from bill to nape : crown, forehead, chin, and ruff or tippet 

 black ; neck and flanks chestnut. 



In winter. As in last. Length 13 inches. 



, 363. BLACK-NECKED or EAEED GEEBE. Podicipes nigricollis, C. L. f\ L 

 Brehm. Autumn to spring. Jl J 



Bill slightly curved upwards ; inner four primaries white throughout. 



In summer. Head and neck black, with a stripe from eye to nape of 

 lengthened golden reddish feathers. 



In winter. Resembles last in plumage, except the white on primaries. 

 Lensrth 12 inches. 



