BIRDS FROM THE FAR4.LL0N ISLANDS. 45 



37. Buteo borealis calurus. 



Western Ked-tail. — Every spring the island is visited by 

 numbers of these hawks. In 1882 they came in April, about 

 the time of the arrival of the murres, leaving again in May. 

 During their short stay they fed almost exclusively upon 

 the murres, killing, in the estimation of Mr. Emerson, 

 several dozen a day. In 1887 the lighthouse men killed 

 about seventeen of these hawks, and during the month of 

 May, 1885, twenty-eight, mostly of this species, were 

 destroyed. 



38. Archibuteo ferrugineus. 



Ferrugineus Kough-leg. — One specimen killed. 



39. Falco mexicanus. 



Prairie Falcon. — An adult male taken December 18th, 

 1886. 



40. Falco peregrinus anatum. 



Duck Hawk. — A specimen was shot December 15th, 1886. 



41. Pandion haliaetus carolinensis. 



American Osprey. — One was shot December 15th, 1886; 

 no others have been seen since. 



42. Asio accipitrinus. 



Short-eared Owl. — One was seen in the spring of 1885 

 and one in May, 1887, by Mr. Emerson. 



43. Speotyto cunicularia hypogsea. 



Burrowing Owl. — Two were seen in the spring of 1887, 

 sitting on the rocks. 



44. Ceryle alcyon. 



Belted Kingfisher. — One was seen August 16th, 1887. 



45. Colaptes cafer. 



Bed-shaeted Flicker. — Occasionally seen in the winter. 



