Goatsuckers 



4 19. Merrill Parauque (Nyctidromus albicollis mer- 

 rilli). L. 12; T. 6.2. Outer tail-feather without 

 white. Two color phases, one gray, one rusty. Ad. 

 rj 1 . Outer tail-feather black with sometimes a little 

 rusty, next feather white on inner web, third feather 

 white except at base. Ad. $. Outer tail-feathers 

 brownish with broken rusty bars; next two with white 

 at tip. Notes. A vigorous ker-whee-you repeated and 

 sometimes running into a whit-wlrit-iclnt, ker-whee-you. 



Range.— Mexico north to southern Texas; winters chiefly south of 

 Rio Grande. 



420. Nighthawk (Cbordetles •cirginianus) . L. 10. 

 W. 7.8. Primaries blackish with a white bar and no 

 rusty spots; darkest of our Nighthawks. Ad. cf. 

 Above black with white and buff markings, throat and 

 band near end of tail white. Ad. $. Throat rusty, no 

 white band in tail. Notes. A nasal peent; and in the 

 breeding season, a booming sound produced by diving 

 from a height earthward. 



Range. — Eastern United States, chiefly, breeds from Florida to 

 Labrador, west and northwest to northern California, British Colum- 

 bia, and Alaska; winters south of United States. 



420a. Western Nighthawk (C. v. henryt). Simi- 

 lar to No. 420, but markings above rusty and more 

 numerous; belly washed with rusty. 



Range. — Western United States, east to the Plains, wintering south 

 of United States; exact distribution unknown. 



420b. Florida Nighthawk (C. v. chapman*)'. Simi- 

 lar to No. 420, but smaller (L. 8.6; W. 7.1;) and 

 paler; white and buff markings above larger and more 

 numerous. 



Range. Florida, west along Gulf Coast to eastern Texas; south in 

 winter to South America. 



420c. Sennett Nighthawk (C.v.sennetti). Simi- 

 lar to No. 420b, but still paler, white and buff prevail- 

 ing on back and scapulars; palest of our Nighthawks. 



Range. — Great Plains north to Saskatchewan; winters south of the 

 «'nited States. 



42 1. Texan Nighthawk {Chordeiles acutipennis tex,- 



ensis). Wing quills with rusty spots; outer primary 

 shorter than one next to it; belly conspicuously washed 

 with rusty buff. Ad. J\ Throat-patch and band near 

 end of tail white. Ad. $. No white band in tail. 

 Notes. A mewing call and a tapping accompanied by a 

 humming sound. (Merrill.) 



Range.— Central America; breeding north to southern Texas, south- 

 ern New Mexico, souihern Utah, southern Nevada, and Lat. 38 in 

 California; winters south of United States. 



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