250 BIRDS OF EUROPE AND NORTH AFRICA 



Breeds. — Nova Zembla, Arctic Siberia and western N. America. 

 Occurs in winter on Coasts N. Russia and N, and W. Norway ; 

 rare visitor to British Isles, Finland and Sweden ; has occurred 

 on Caspian Sea and in Italy. On American Pacific Coast ranges 

 south to S. Alaska and also occurs in Japan. 



Colymbus arcticus arcticus L. Black-throated 

 Diver. F7: Plongeon a gorge noire ; Ger. Polartaucher ; ItaL 

 Strolaga mezzana ; Swed. Stor-lom. 



(J $ summer. Above black or deep brown, barred with 

 white, wings spotted ; head, throat and hind neck grey ; beneath 

 white, foreneck purplish black, sides of neck and breast streaked 

 black and white. In winter much as in " immer " but smaller. 

 Iris light chestnut. Bill bluish black. Outer side of legs and 

 outer toe blackish, inner side of legs and inner toes reddish 

 flesh, webs whitish. Wing ^ 330-342, $ 305-320 (Zedlitz). 

 Tarsus 73-83. Bill 55-67. 



Breeds. — Norway to Finmark, Sweden, Lapland, N. Finland, 

 Nova Zembla, Waigatz, Kolguev, Russia south to Moscow and 

 Smolensk, Baltic Provinces, N.E. Germany (rare), N. Scotland. 

 In winter occurs on Coasts S. and W. Norway, Denmark, 

 Britain, Holland, France, and rarely Spain and Portugal ; 

 occasional in Mediterranean, Italy, Rumania and Greece, and 

 on lakes of S. Russia and in Black Sea. 



0. arcticus suschkini (Sarudny). Head and hind neck lighter 

 than in "arcticus"; bill weaker and shorter. Wing 291-337 (H.). 



Breeds. — Govts, of Perm and Ufa in E. Russia, and in 

 Siberia. Occurs on Caspian Sea in winter. 



Colymlbus stellatus Pontoppidan. Red - throated 

 Diver. Fr. Plongeon catmarin ; Gcr. Nord-Seetaucher ; lial. 

 Strolaga minore ; Swed. Smalom. 



^ $ summer. Above brown with small white spots, head 

 and sides of throat grey ; hind neck and sides of breast brown 

 with white streaks ; throat patch chestnut ; underparts white. In 

 winter entire throat and foreneck white, and head and hind 

 neck are freckled with white. Bill horn black. Legs and feet 

 on outer side greenish black, inner toes and inner side of legs 

 yellowish white, webs pale flesh. Iris chestnut brown. Wing 

 280-305. Tarsus 68-75. Bill 47-53. 



