Goatsuckers 



4 I 9. Merrill Parauque (Nyciidromus atbicollis mer- 

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

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

 r^. Outer tail-feather black witli socnelidies a little 

 rusty, next leather white on inner web, third feather 

 white except at base. Ad. 9. Outer tail-feathers 

 brownish with broken rusty bars; next two with white 

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

 sometimes running into a whit-whit-whit, ker-w/iee-j/au. 



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

 Rij Grande. 



420. Niglitliawk {Churdeihs iirginianu!>). L. jo, 

 W. 7.S. Primaries blackish witfi a white bar and no 

 rusty spots; darkest of our Nighthawks. /!d. cf. 

 Above black with white and buff markings; throat and 

 band-near end of tail white. Ad. 9- Throat rusty, no 

 white band in tail. Notes. A nasal ^^m(; and in the 

 breeding season, a booming sound produced by diving 

 from a height earthward. 



Rangp.— Eastern Unlttd States, chiefly, breeds from Florida to 

 Lahrador. we'll an.1 northwest to northern California. British Coium- 

 bla. and Ala.sita; winters south of United States. 



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

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

 numerous; belly washed with rusty. 



Range- — Western United Slates, east tu Hit PlLii[is, wintering soutli 

 of Uniied Slaitt,} esacl dislributifil unknown. 



420b. Florida Nighthawk (C. v. chapmani). Simi- 

 lar to No, 42U, 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. senneiti). Simi- 

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

 ing on back and scapulars; palest of our Nighthawks. 



Rane«- — Great Plains north to Saskatchewan; winters south of the 

 Jnited States. 



42 1. Texan Nighthawk {Chordeiles acutipenms tex- 

 £nsis}. Wing quills with rusty spots; outer primary 

 shorter than one next to it; belly conspicuously washed 

 witli rustv buff. Ad. (f. Throat-patch and band near 

 end of tail white. Ad, 9. 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, southern Utah, southern Nevada, and Lit. 38' in 

 California; winters south of United Stales. 



157 



