AREA 429, San Francisco (cont'd.) 



036) Alcatraz Island 3749'34"N > 12225'20"W 



Western Gull 

 Heermann's Gull 



X (Abbore, 1980) 

 2 (Binford, 1980) 



25 

 8 



[037) Pier 45 3748'34'N, 12225'W 

 Western Gull X (Danielson, 1973) 



15 



038 Yerba Buena Island 3748'34"N ) 122 22'15'W 



Western Gull 

 Western Gull 



X = present 



80 (Cogswell, 7/28/74) 

 X (Cogswell ,1967) 



25 

 15 



208 



