344 University of California Publications in Zoology ["Vol. 24 



Hazelton is near the western limit to which the yellow-shafted 

 flicker might be expected to range; it cannot be far to the westward 

 that the red-shafted flicker {Colaptes cafer cafer) occurs. It is of 

 interest that, of the breeding specimens from Hazelton and Kispiox 

 Valley, nearly all show traces of cafer blood. The four adult summer ■ 

 males collected all show more or less red in the normally black 

 'mustache.' In females the cafer characters are not so conspicuous, 

 showing sometimes in a tinge of reddish in the quills, sometimes 

 in certain details of body markings or color. In one case, wings and 

 tail are nearly as red as in typical cafer. Some young males (nest- 

 lings) show red in the 'mustaches,' but not so conspicuously as do the 

 adults. 



The flickers that arrived so numerously in September were, I 

 believe, migrants from the north, from a region far removed from any 

 chance of admixture with cafer. Five collected at that time are all 

 typically auratus-like in every detail. In aU, twenty-eight yellow- 

 shafted flickers were collected (nos. 42141-42168). The series includes 

 twelve nestlings, eight in one lot (the entire brood), and four from 

 another brood that consisted of six in all. 



Chordeiles virginianus virginianus (Gmelin). Eastern Nighthawk 



Arrived at Hazelton, June 3. Fairly common in the lowlands there- 

 after until about the middle of August, when the birds began to 

 disappear. Last seen August 31. Two specimens collected (nos. 

 42169-42170), adult male and female. 



« 

 Cypseloides niger borealis (Kennerly). Black Swift 



Abundant throughout the summer. Usually seen flying high over- 

 head, seldom within gunshot of the ground. One specimen collected 

 (no. 42171), an adult female, at Kispiox Valley, August 20. 



Chaetura vauxi (J. K. Townsend). Vaux Swift 



A few birds (perhaps three pairs) seen occasionally at a certain 

 spot in the woods near Hazelton. Small flocks or single individuals 

 noted at long intervals in Kispiox Valley. Last seen September 3. 

 One specimen collected (no. 42172), an adult male, July 20. 



