230 



KEY TO THE WATER BIRDS OP' FEORIDA. 



with black ; back and scapulars dusky : speculum gray ; bill dusky, showing a faint bluish gray 

 liand near the end. 



Adult female : Head brownish, the sides mixed with grayish brown, widening on tlie cheeks 

 and base of the bill; belly whitish, becoming grayish on the lower portion : bill as in the male. 



Length, 17; Wing, 8; Bill, 2. 



Aythya collaris (female). 



Aythya collaris (male). 



Species ranges throughout North America breeding north of the United 

 States. It ranges south in winter to Guatemala and the West Indies. It is 

 common in Florida, generally preferring fresh or brackish water to the ocean. 



The female of this species resembles the female Red-head, but is easily 

 distinguished from that species by its smaller size. This species may be 

 distinguished in any plumage from the Scaup Ducks by its gray speculum. 

 The note somewhat resembles that of the Scaup Duck. In winter the'collar 

 of the male is usually absent or but slightly indicated. This species does 

 not breed on the Atlantic coast. 



