Tropic Birds and Gannet 



1 1 2. Yellow-billed Tropic Bird (Tkaetkon american- 

 us). L. 30; T. 19. Ads. Bill yellow; no bars above; 

 middle tail feathers lengthened. Yng. Above barred 

 with black; middle tail feathers not lengthened. 



Range. Tropical coasts; breeds in West Indies, Bahamas and Ber- 

 mudas; casual In Florida; accidental in western New York and Nova 

 Scotia. 



113. Red-billed Tropic Bird (Thaethon&tbereus}. 

 L. 30; T. 20. Ads. Bill red; above barred with 

 black; long middle tail feathers pure white. 



Range. Coasts of tropical America, north on the Pacific coast to 

 Cape Colnett, Lower California; accidental on the Newfoundland 

 Banks. Breeds on San Pedro Martir and other Islands In the Gulf of 

 California." (A. O. U.) 



117. Gannet . ( Sula bassana) . L. 35. Ads. White; 

 head and neck tinged with straw; primaries blackish. 

 Yng. Grayish brown with white spots. Note. A 

 harsh gor~r-r-rok. * 



Range. North Atlantic; breeds, in America, only on Bird Rock and 

 Banaventure Islands, Gulf of St. Lawrence; winters off the coast, 

 south to Florida. 



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