^1914^] THAYER AND BANGS — BIRDS 33 



Our skin is an actual topotype of this distinct form, and agrees 

 exactly in all characters with Buturlin's description. We are in- 

 clined, however, to consider it a subspecies rather than a full species. 



Archibuteo lagopus lagopus (Brunnich). 



A nest of the rough-legged hawk was found in a valley thirty 

 miles east of Cape Bolshaja Baranov, July 13, 1912. In it were 

 four young birds from five to ten days old. The nest was placed 

 on top of a very high block of turf on a steep hillside, at the foot of 

 which ran a small river. The young birds and one of the parents 

 were preserved as skins. The latter, however, was afterwards lost. 



HalisBetus albicilla (Linn.). 



One adult female was shot at the nest, River Annuj, Kolyma, 

 May 19, 1912, and several sets of eggs were taken. 



The gray sea eagle was common at Kolyma, wherever there were 

 trees, but was not seen elsewhere. It is not found in the region in 

 winter, but makes its appearance very early in spring. A nest 

 containing two eggs, about twelve days incubated, was found at 

 River Annuj, Kolyma, May 19, 1912. It was in the top of a larch 

 about twenty feet high. May 27, another nest was found not far 

 from the first one, also in a larch, with a clutch of three eggs that 

 had been incubated from sixteen to twenty days. Still another 

 nest, with one egg about twenty days incubated, was discovered 

 near Nijni Kolymsk, on May 28, 1912, in the top of a big larch. 



Haliseetus leucocephalus alascanus Townsend. 



The northern bald eagle now occurs regularly on the Arctic coast 

 of Siberia. It was perfectly well known to the natives of Nijni 

 Kolymsk, who told Mr. Koren that it was there every summer. 



