The Cliff Swallow (Petrochelidon pyrrhonota) is a passerine bird in the Hirundinidae family of swallows and martins.

Cliff Swallow

The Cliff Swallow (Petrochelidon pyrrhonota) is a passerine bird in the Hirundinidae family of swallows…

"Cliff Swallow. Eaves Swallow. Crescent Swallow. Mud Swallow. back and top of head, with a spot on the throat, deep lustrous steel-blue, that of the crown and back separated by a grayish nuchal collar. Frontlet white or brownish-white. Shorter upper tail-coverts rufous. Chin, throat, and sides of head intense rufous, sometimes purplish-chestnut, prolonged around the side of the nape. Under parts dull grayish-brown, , with usually a rufous tinge (rusty-gray), dusky shaft-lines, whitening on the belly, the under tail-coverts gray, whitish-edged and tinged with rufous. Wings and tail blackish, with slight gloss. Bill black; feet brown." Elliot Coues, 1884

Cliff Swallow

"Cliff Swallow. Eaves Swallow. Crescent Swallow. Mud Swallow. back and top of head, with a spot on the…