THE WESTERN NIGHTHAWK. 407 



man from Kansas. He has a perfect right here and he is a very good fellow. 

 Oh, to he sure! 



Tlie Pacific Xightha\vi< (hffers lj_\' scarcely assignaljle characters from tlie 

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

 hution by two bleached phases, C. v. Iicnryi and C. v. seniictli, of the desert 

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

 the intermediate stock rather than a division or colony of C. z'irginianits 

 proper. Bird of the ])Iains tlio it be. it is ])nshing its way determinedly on the 

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

 Juan Islands or in some little clearing of the mountain \alleys as up(jn the 

 ampler readies of tiie 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 A\enue in Seattle, we judge that it 

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

 flat roofs of down-town buildings. 



No. 158. 



WESTERN NIGHTHAWK. 



A. O. U. No. 420a. Chordeiles virginianiis henr>i iCass.). 



Description. — Similar to C. v. hesperis, but paler thruout ; areas of black 

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

 e.xtensivcly tawny whitish. 



Recognition Marks. — As in preceding. 



Nesting. — Xcst and Eggs not distinguishable from those of C. v. hesperis. 



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

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

 Sierra ranges, north into British Columbia ; south in winter to northern South 

 America. 



Range in Washington. — Common sumiucr resident in ojjcu situations east 

 of the Cascade Mountains. 



Migrations. — Spring: Moses Lake. May 13, 1906: Chelan, May 29, 1905; 

 Oro. May 29. 1896. 



Authorities. — ("Western Xighthawk," [ohnson. Rep. (lov. W. T. 1S84 

 (•iBSt) 22) : Bendire, Life Hist. X. A. Birds." \ol. II. 1895. p. 168. I)'. Sr, Ra. 

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



Specimens. — ( T'. of W. ) P". Prov. H. 



THLSR Xighthawks are jjerfectly harmless except to moths, midges, and 

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



