228 



key to the water birds of florida. 

 Subgenus FULVIGULA Stephens. 



(Male.) 



(Female.) 



AYTHYA MARILA NEARCTICA Shy/i. 

 American Scaup Duck. 



Adult male: Head and neck and upper breast black .showing greenish refiections ; back 

 grayish white dehcately lined with fine wavy lines of black, giving it a grayish appearance ; 

 speculum white; under parts white, the lower belly showing grayish tinge. 



Length, 19; Wing, 8.50 ; Tarsus, 1.50; Bill, 2. 



Adult female : Patch at the base of the bill white or grayish white, rest of the head and 

 neck, breast and upper back browni.sh : belly white : speculum white. 



Length. 17.75: Wing, 8. 25 : Tarsus. 1.30: 15111. 1.60. 



Species ranges throughout North America, breeding north of the United 

 States. It ranges in winter south to the Bahama Islands, and on the Atlan- 

 tic coast south to Florida, although it is not nearly as abundant in Southern 

 waters as A. 111. a /fin is, to which it is verv closely allied. There are, ap- 



