1911] Sivarth: Alaska Expedition of 1909. 73 



Although I believe this species has not been previously 

 reported from Alaska we found it at all the mainland points 

 visited, as far north as Thomas Bay. At Marten Arm, Boca de 

 Quadra, it was common. Along the Chickamin River it was, 

 at times, very abundant, and a female shot at this point (no. 

 9359, June 18) contained a partly formed egg, so that the species 

 was evidently breeding. At Portage Cove, Revillagigedo Island, 

 Vaux swifts were seen occasionally, usually in the evening ; while 

 a single bird was seen at Bradfield Canal on July 19. At Thomas 

 Bay, August 13 to 23, the species was very abundant, hovering 

 over the meadows in company with the barn swallows, but they 

 flew high and I failed to get any at this point. Three specimens 

 were secured, two males from Boca de Quadra (nos. 9357, 9358), 

 and a female from the Chickamin River (no. 9359). The latter 

 evinces a tendency toward albinism, shown by two patches of 

 pure white feathers on the lower surface of the body. 



The three individuals secured from this the northern extremity 

 of its range are not different from California specimens with 

 which they were compared. 



Selasphorus rufus (Gmelin). Rufous Hummingbird. 



First seen at Three-mile Arm, Kuiu Island, on April 26, 

 when a male bird was several times observed hovering over a 

 blossoming huckleberry bush by the tent. The species was next 

 met with at Calder Bay, Prince of Wales Island, where a female 

 was seen on ]May 11, and a male secured on INIay 12 (no. 9356). 

 From then until about the end of June it was, though not com- 



