DIRECTORY TO BIRDS OF EASTERN NORTH AMERICA. 125 



salt water than on fresh, sometimes occurring along the coast 

 in flocks of hundreds. 



3. FLORIDA BLACK DUCK, A. FULVIGULA. Differs 

 from 1 in being smaller, much more yellowish with longitud- 

 inal marks in the feathers above and Y-shaped marks of the 

 same in tail feathers ; bill, greenish ; feet, reddish-orange. 

 Central and southern Fla. Common, but seldom seen in 

 large flocks. Nests in April. 



b. Gray Ducks. Chaulelasmus. 



Medium sized ducks that do not dive, which differ from 

 a in having the bill narrower and not at all expanded at tip. 



1. GAD WALL, C. STREPERUS. 21.00; bill, 2.10; spec- 

 ulum, white bordered in front with black ; head and neck, 

 yellowish spotted with black ; top of head, reddish ; upper 

 parts, lower neck and sides, dusky finely banded with white ; 

 bill, black ; feet, greenish, fig. 144. Female, brownish through- 

 out ; speculum as in male. Nearly cosmopolitan; in N. A. 

 breeds in western U. S. where it is common, rare on the At- 

 lantic coast. Migrates south in Nov. wintering as far south 

 as Central America ; comes north in April; breeds in May, 

 nesting on the ground ; eggs, 6 to 10, pale brownish-buff. 

 Fig. 144. Fig. 145. 



IV, B, b, 1. 1-12. JV, B, C, 1. 1-12. 



c. Widgeons. Mareca. 



Medium-sized ducks with short, narrow bills and top of 

 head whitish. 



