Tropic BirdsTand Gannet. 



I I 2. Yellow-billed Tropic Bird (Thaetkon americaw 

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

 middle tail feathers lengthened. Yng. Abdve 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 [Thaethoncethereus). 

 L. 30; T. 23. 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.) 



I I 7. Gannet (Sula bassana). L. 35. Ads. White; 

 head and neck tinged with straw; primaries blackish. 

 Yng. Grayish brown with white spots; breast and 

 belly white. Notes. A harsh gor-r-r-rok. 



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

 Bonaventure Islands, Gulf of St Lawrence; winters off the coast, 

 south to Florida. 



\ mmaitupe. 



69 



