NO. 2 BIRDS OF ALASKA AND SIBERIA HERSEY I7 



a smaller bird was sometimes noted with a lighter colored throat, 

 which I referred to the Slender-billed. I do not believe, however, 

 that there is any character conspicuous enough to positively identify 

 this species in life, and it is probable that both of the above species 

 were equally abundant. They did not extend very far into Bering 

 Sea and on my return in early September most of them had left, 

 although two or three good sized flocks were still to be seen. 



JESTRELATA FISHERI 



Fisher's Petrel 



One of the pleasures of the trip across the North Pacific was the 

 repeated occurrence of this species. The first one was seen May i8, 

 and during the next three days they were very common. May 22 

 we were near the Shumagin Islands and none were noted. On the 

 return two were observed September 14 and again next day. 



Among the large dark Shearwaters, and smaller but also darker 

 Petrels, this species was easily distinguished. One bird came close 

 up to the stern of the vessel where he was not more than 25 feet 

 from me. He remained at this distance for about three minutes, 

 which gave me a very satisfactory opportunity to examine him closely. 



OCEANODROMA FURCATA 



Fork-tailed Petrel 



OCEANODROMA LEUCORHOA 



Leach's Petrel 



Both of these Petrels were very abundant in the North Pacific. 



PHALACROCORAX PELAGICUS PELAGICUS 



Pelagic Cormorant 



This is the most common member of the family in the northern 

 parts of Bering Sea and is the only one I positively identified. They 

 were nesting at East Cape where a young bird, able to fly, was taken. 



A Cormorant which I thought might be robustus, if that form is 

 really distinct from pelagiciis, was shot at Unalaska but fell into the 

 sea a few feet from shore. Before I could get a boat the swiftly 

 ebbing tide had carried it out of sight. 



About St. Paul Island many Cormorants were flying about which 

 may have been urile, but they kept at a distance and I failed to satis- 

 factorily identify them. 



