130 The Birds of Albany County 



Bald EIagle; American EIagle. — Haliaetus leucoceph- 

 alus. 32.00 



Not Uncommon Transient Visitant 



Field marks. — Head, neck and tail white; rest of plumage 

 dark brown, appearing blackish to distemt observer. 



The above description appUes only to the adult birds in the 

 third or fourth year, as the immature examples are imiformly 

 dark, flecked here and there with white. Bald Eagles have 

 been seen quite frequently in recent years passing over Albany 

 County and they doubtless pause occasionally when circum- 

 stances are propitious, though they certainly do not breed 

 here. Farther down the Hudson Valley there are known 

 eyries, which remain unmolested year after year. The species 

 is not so rare as has been supposed, though die regions 

 hereabouts are not favorable to it as a resident. There is no 

 mistaking the mature bird vsnth a white head, but the immature 

 birds can be told from certain Hawks only by their immense 

 spread of wings. 



American Rough-legged Hawk. — Archibuteo lagopus 

 sancti-johaimis. 21.50 



Very Rare Migrant 



Field marks. — Nocturnal in habits, hunting in late twilight; 

 slow, noiseless, measured flight; plumage dark, though it 

 exists in lighter phase. 



This Hawk has been occasionally seen in this County. 



