b. Bill very broad; nasal aperture much projecting (Jamaica) … Siphonorhis.
Chordeiles popetue.
1605 ♂
Of the genera enumerated above, only two certainly belong to the fauna of the United States (Chordeiles and Antrostomus), although there is some reason to suppose that Nyctidromus should be included, as among the manuscript drawings of Dr. Berlandier, of birds collected at Matamoras on the Lower Rio Grande, is one that can be readily referred to no other than N. albicollis.[102] The briefest diagnoses of these three genera will be as follows:—
Chordeiles. Gape without bristles; tarsi moderate, partly feathered; tail narrow, slightly forked; plumage rather compact.
Antrostomus. Gape with bristles; tarsi moderate, partly feathered; tail broad, considerably rounded; plumage soft.
Nyctidromus. Gape with bristles; tarsi lengthened, bare; tail broad, rounded; plumage soft.
Genus CHORDEILES, Swainson.
Chordeiles, Swainson, Fauna Bor. Amer. II, 1831, 496. (Type, Caprimulgus virginianus.)
Gen. Char. Bill small, the nostrils depressed; the gape with feeble, inconspicuous bristles. Wings long, narrow, and pointed; the first quill nearly or quite equal to the second. Tail rather narrow, slightly forked; plumage quite compact. Habits diurnal or crepuscular.