94 



KEY TO THE "WATER 15IRDS OF FLORIDA. 



Subfamily FULIGULIN^^. Bay and Sea Ducks 



Ducks having flap or membranous lobe on hind toe. 



Genus AYTHYA Boie. 



ii^'^ 



AYTHYA AMERICANA {EyL). 

 Red=head Duck. 



Adult male : Head and neck brownish chestnut ; lower neck and upper breast black- 

 ish ; back apparently grayish being pencilled with wavy lines of black ; speculum grayish ; 

 upper feathers edged with black, the rest narrowly tipped with white. 



Length, 21 ; Wing, 8.40; Tarsus, j.6o; Bill, 2.20. 



Adidtfejiiale : Bill bluish showing an indistinct bar near the end ; head and neck reddish 

 brown, palest on the sides of the head, becoming ashy on the sides of the head ; upper throat 

 white; breast and sides brownish ; belly white; under tail coverts and lower belly sometimes 

 washed with pale brownish. 



Length, 20.50; Wing, 8.30 ; Tarsus, 1.60; Bill, 2.20. 



This is rather a Western species, as it breeds very rarely on the Athmtic 

 coast of the United States. It is common in the West breeding from 



