8 • Bulletiyi American Museum of Natural History [Vol. XL VIII 



Island. At that time a guano company with about 135 employees was 

 removing guano and causing great disturbance among the nesting birds. 

 Col. Goss predicted that with the exhaustion of the guano supply the 

 birds would return in great numbers, and this has evidently taken 

 place. The accompanying photograph taken on April 15 from the deck 

 of the 'Albatross' while passing San Pedro Martir, shows the greater 

 part of the island densely covered with birds. This barren rock, less than 

 a mile in length and width, is over 1000 feet in height. We did not 

 attempt to land, owing to the force of the gale which was blowing. 



Phalacrocorax auritus albociliatus Ridgway 



Farallon Cormorant 



One specimen, Magdalena Bay, March 20. Cormorants were seen 



almost daily during the voyage. A compact flock of a thousand or more 



was seen at Santa Maria Bay, March 18, and a flock of nearly as many 



at San Roque Island, March 15. 



Fregata aquila (Linnaeus) 

 Man-o'-war-bird 

 This bird is common about the lower part of the peninsula from 

 Magdalena Bay on the Pacific, where it nests on the mangroves, to 

 Concepcion Bay on the Gulf. 



Chaulelasmus streperus (Linnaeus) 

 Gadwall 

 San Jose del Cabo, March 26, one specimen. 



Marila americana (Eyton) 

 Redhead 

 San Jose del Cabo, March 26, one specimen. 



Anas platyrhynchos Linnaeus 

 Mallard 

 Three mallards were seen at San Josef Island on March 30. Not 

 observed elsewhere. 



Marila affinis (Eyton) 

 Lesser Scaup Duck 

 Seen at La Paz and San Josef Island late in March, and at Angel 

 Guardia Island, April 10. 



