The Pacific Nighthawk 



Taken at Big Bear Lake 



THE OFFERING 



PACIFIC NIGHTHAWK DECOYING FROM NEST 



Photo by W. M. Pierce 



No. 208 



Pacific Nighthawk 



A. O. U. No. 42od. Chordeiles minor hesperis Grinnell. 



Synonym. — Bull-bat. 



Description. — Adult male: Mottled, black, gray, and ochraceous, and with 

 white in patches; above, black predominating, especially on crown and back, mottling 

 falling into indistinct bars on upper tail-coverts and tail; a touch of white on edge of 

 wing in front of alula; the wing-quills dusky, the first primary usually exceeding or at 

 least equal to the second; a large white transverse patch just within the basal half 

 on the first five or six primaries (merely indicated on the outer web of the first) and 

 opposite the tip of the eighth; a large inverted V-shaped throat-patch white; the chest, 

 in sharp contrast, chiefly black with a few tawny tips; remaining underparts distinctly 

 and finely barred, dusky and whitish with some faint ochraceous; the crissum pure 

 white, usually barred at greater intervals than on breast; tail notched for half an inch 



1059 



