BLACK-THROATED DIVER. Colymbus arcticus. 



Breeds in the nortli and west of Scotland ; rare winter visitor to 

 England and Ireland. Circumpolar species^ breeding in the Aretic 

 RegionSj wintering in the temperate parts of the northern hemisphere. 



RED-THROATED DIVER. Colymbus septentrionalis. 



Breeds in the north and west of Scotland and in the north of Ireland ; 

 winter visitor to the coasts of England and Ireland. Circumpolar species^ 

 breeding in the Arctic Regions, wandering in winter to the frontiers of 

 the Tropics. 



Family PODICIPID^. 



GREAT CRESTED GREBE. Podiceps cristatus. 



Local resident. Resident in all parts of the Old World, including New 

 Zealand, except in the Arctic Regions and the Tropics. Summer visitor 

 only where the winters are severe, 



RED-NECKED GREBE. Podiceps rubricollis. 



Winter visitor. Circumpolar species, breeding in the subarctic and 

 temperate parts of Europe, Asia, and North America. Summer visitor 

 only where the winters are severe. East Asian and American examples 

 are slightly larger than the typical form. 



EARED GREBE. Podiceps nigricoHis. 



Rare spring and autumn migrant; said to have bred in Norfolk. 

 Resident in the basin of the Mediterranean and South Africa. Summer 

 visitor to Central Europe and South Siberia, wintering on the coasts of 

 Baluchistan and China. A race only subspeciUcally distinct is a resident 

 in the Western States, Mexico, and Central America. 



SCLAVONIAN GREBE. Podiceps cornutus. 



Winter visitor; a few supposed to breed in the north of Scotland. 

 Circumpolar species, arctic in Norway, subarctic in the rest of its range. 

 Wanders in winter as far south as the frontiers of the Tropics. 



LITTLE GREBE. Podiceps minor. 



Common resident. Summer visitor to Central Europe. Resident in 

 South Europe, Africa, and South Asia. 



