THE WESTERN NIGHTHAWK. 407 



man from Kansas. He has a perfect right here and he is a \-ery good feUow. 

 Oh, to be sure ! 



The Pacific Xightliawk differs by scarcely assignable characters from the 

 typical form of the eastern United States, but it is separated from it in distri- 

 bution Ij_\- two bleached [ihases, C. I', hciiryi and C. :■. sciiiictli. of the desert 

 and plain respectively: so we feel confident that it represents a resaturation of 

 the intermediate stock rather than a di\'ision or ccjlonv of C. I'irgiiiianiis 

 proper. Bird of the plains tln) it be. it is pushing its way determinedly on the 

 West-side where\'er openings offer, and is as likely to occur upon the San 

 Juan Islands or in some little clearing of the mountain valleys as upon the 

 ampler reaches of the Chehalis prairies. Latterly, also, it has accommodated 

 itself to the life of the city, and from the fearless way in which it appears 

 over Pacific Avenue in Tacoma. or Second Avenue in Seattle, we judge that it 

 must be following the well established eastern custom of laying its eggs on tlie 

 fiat roofs of down-town buildings. 



No. 158. 



WESTERN NIGHTHAWK. 



A. O. U. Xo. 420a. Chordeiles virginianiis henryi (Cass.). 



Description. — Similar tu C". r. Iicspcris. but jialer thruout ; areas of black 

 reduced, white patches of throat, wing, and tail averaging larger ; below more 

 extensively tawny whitish. 



Recognition Marks. — As in preceding. 



Nesting. — Xcst and E[/gs not distinguishable from those of C. r. hrsl'cris. 



General Range. — Arid Transition and Canadian life-zones of the Western 

 United States from the eastern slopes of the Rocky ^Mountains to the Cascade- 

 Sierra ranges, north into British Coluniljia : south in winter to northern South 

 America. 



Range in Washington. — Common summer resident in cipen situations east 

 of the Cascade Alountains. 



Migrations. — Spri)iy: Moses Lake. May 13. iqo6: Chelan. May 29. 1905; 

 Oro. May 29. i8g6. 



Authorities. — ["\\'estern Xightliawk." Johnson. Rep. Gov. W. T. 1884 

 ( 1885 1 22J ; Bendire, Life Hist. X. A. Birds" \o\. II, 1895. P- 168. D-. Sr. Ra. 

 D-'. Ss'. Ss-'. Kk( ?). J. 



Specimens.— (U. of W. ) P'. Prov. E. 



THESE X^ighthawks are perfectly harmless except to moths, midges, and 

 their ilk: and their uplifted wings half careened by the evening breeze furnish 



