150 KEY TO THE WATER BIRDS OF FLORIDA. 
Famity SULIDE. GANNETS. 
Sula bassana. 
Sula sula. 
Length, 36; Wing, 18.50; Tail, 9; Bill, 4.10. 
Immature plumage mottled grayish brown and 
white; head and neck white tinged with buff. Sula bassana. 
Gannet. See page 206 
Length, 27; Wing, 15.50; Tail, 8; Bill, 4; Tarsus, 
1.60. Head and upper parts sooty brown; bill 
and feet pale yellow ; gular sack yellow. Sula sula. 
Common Booby. See page 205 
Length, 27; Wing, 16; Tail, 7.70; Bill, 4; Tarsus, 
1.85. Head, white; head whitish; gular sac 
bluish ; feet reddish. Sula cyanops. 
Blue-faced Booby. See page 205 
Length, 27; Wing, 15; Tail, 8; Tarsus, 2.10; Bill, 
3.50. Head white tinged with buff; feet coral 
red; gular sac dusky. Sula piscator. 
Red-footed Booby. See page 206 
