FIELD KEY 



To the Birds of Amherst : an artificial arrangement based on 

 size, color, habitat, habits and notes. 



NOTE WELL: This key is not Intended to Identify immature birds; its 

 use in the/oK Is therefore liable to lead to mit-takes and disap- 

 pointment. » 



Size large ; as big as a crow or bigger. Group I. 

 Size medium ; as big as an English sparrow or bigger, 



but smaller than a crow. Group II. 

 Size small ; smaller than an English sparrow. 



Group III. 



NOTE WELL: This use of size is obviously purely relative. 

 There is room for difference of opinion as to whether 

 certain birds are '■'■as big as an English sparrow" or 

 not. Moreover individuals differ. If in doubt, try 

 Group II, and if that fails to lead to a satisfactory ' 

 result, try Group III. 



Group I. Large birds. 



1. Usually seen swimming on surface of still water, or div- 

 ing, or flying high up with outstretched neck. 

 A. About 3 feet long. 



G-eneral coloration brownish-gray ; bill 2 inches, blunt, 



Canada Goose. 

 G-eneral coloration black and white ; bill 3 inches, acute, 



Loon. 



