KKV TO FAMILIES. WATER BIRDS. 



21 



-r -11 



GROUP 5. 



Toes, three, full webbed ; no hind toe. 



Nostrils, separate, not opening into one double-barrelled tube; upper mandible, curved 

 near tip; bill, yellowish, or greenish yellow; an indication of a hind toe, in the form of a 

 .,-- v ., small knob without nail ; tail, entirely white, or 



white with black band near tip. This is the only 

 North American gull lacking a hind toe. 



Family LARID/E (Larus tridactijla} . 

 Kittiwake Gull. 

 See page 36. 



Bill, reddish (in life showing also yellow and blue), 

 "peculiar in form, suggesting that of parrot. 

 Family ALCID/C. 

 Subfamily FRATERCULIN/E. Puffins. 



See page 30. 



Bill, black, with narrow white band. 

 Family ALCID/C. 

 Subfamily ALCIN/E. Auks. 



See page 30, 



Bill, black or brownish; wing, 

 over 7.25 inches long, carpus (bend 

 of wing) to tip. 



Family ALC1D/E. 

 Subfamily ALCIN^E. 

 Murres. 

 See page 30. 



Bill, black, or blackish; wing, less than 7.25, but more than 5.50, measured, carpus to tip. 

 Family ALCID/C. Subfamily PHALARIN/E. Guillemots, 



See page 30. 



