THE BIRD BOOK 



Black Petrel 



Ashy Petrel 



107. BLACK PETREL. Oceanodroma melania. 



Range. South Pacific, from southern Califor- 

 nia southward, breeding on the small islands on 

 both coasts of Lower California. They are sim- 

 ilar to the Leach's Petrel except that the rump is 

 blackish. Data. San Benito Is., Lower Califor- 

 nia, July 23, 1896. White egg laid on bare ground 

 at the end of three foot burrow. Size 1.40 x 1. 

 Collector, A. W. Anthony. 



108. ASHY PETREL. Oceanodroma Tiomochroa. 



Range. California coast, breeding on the Far- 

 allones and Santa Barbara Islands. 



This species, while not common, nests in all 

 manner of localities on the Farallones, conceal- 

 ing their eggs under any rock or in any crevice 

 that may attract their fancy. Their single white 

 egg is only faintly if at all wreathed with fine 

 dust-like specks of reddish brown. Size 1.15 x 

 .86. Data. Farallone Is., California, June 12, 

 1895. Egg laid on sand in crevice at the base of 

 a stone wall; well concealed. Collector, Chester 

 Barlow. 



108.1. SOCORRO PETREL. 



Oceanodroma socorroensis. 



Breeds on Socorro, San Benito and Coronado 

 Islands, placing its eggs at the end of burrow. 

 Data. San Benito Is., Lower California, July 12, 

 1897. Single egg at the end of a burrow 3 feet 

 in length. Egg pure white very finely wreathed 

 with pale reddish brown. Size 1.15 x .87. Collec- 

 tor, A. W. Anthony. 



70 



