Vol. II, Pt. I] GIFFORD— BIRDS OF THE GALAPAGOS ISLANDS 25 



They nested in crevices and holes, and on ledges of cliffs 

 and caves, not more than thirty feet above the water. The 

 single Q.gg was usually placed in a slight depression, and sur- 

 rounded by a few bones, seaweed, sticks, remains of crabs, and 

 feathers, which composed the nest. 



This species has been found breeding on Albemarle Island 

 in February, March, and April ; on Culpepper in July and Sep- 

 tember; on Hood in February; on Indefatigable in January; 

 and on James in April — in all, during six months of the year. 

 Eggs about to be laid were taken from birds captured at 

 Academy Bay, Indefatigable Island, on January 22, and at 

 Tagus Cove, Albemarle Island, on April 6 and 9. 



Of four nests examined at Tagus Cove on March 24, one 

 contained an tgg in an advanced stage of incubation, another 

 contained a lively chick two or three days from the shell, and 

 the remaining two contained pretty well-developed young. The 

 same day two young birds just able to fly were shot. A young 

 one was taken from a nest on Culpepper Island on September 

 25, 1906. 



It was not uncommon to see a Noddy sitting on the head of 

 a Brown Pelican, while the latter was resting on the water 

 swallowing fish. Once I saw two on a pelican's head at one 

 time. Several often accompanied the young pelicans in their 

 excursions along the coasts. 



On the outward voyage from San Francisco in 1905, the 

 first Noddies were met with on July 24 in latitude 19° 40' 

 North, longitude 112° West, several passing us that evening. 

 A few were next seen along the coast of Socorro, Revilla 

 Gigedo Islands, on July 27. That same day we visited Oneal 

 Rock, which lies about a mile from Cape Henslow, Socorro. 

 There Noddies and Sooty Terns were assembled in thousands. 

 Only Noddies seemed to be nesting, and they were found all 

 over the rock, each tgg being deposited in a little depression. 

 We caught many adults with our hands, while they were sit- 

 ting on their nests, in addition to two well-feathered young. 



After leaving the Revilla Gigedo Islands, Noddies were 

 again seen on July 31 in latitude 13° 47' North, longitude 109° 

 15' West. In latitude 10° 43' North, longitude 109° 10' West, 

 on August 3, one came aboard the vessel in the evening. 



