Mexican Whip-poor-will
Antrostomus arizonae
The Mexican whip-poor-will is 23 to 24 cm (9.1 to 9.4 in) long and weighs 45 to 50 g (1.6 to 1.8 oz). In general its upperparts are grayish brown with blackish brown streaks; the crown has wide blackish brown stripes. The throat and breast are blackish with a thin white band on the lower throat between them. The belly is buff with brown bars. The male's outermost three pairs of tail feathers have broad white tips; the female's are narrower and buffy. The wings are brown with tawny and buff spots and speckles. The subspecies differ somewhat. Voice: The Mexican whip-poor-will is more often heard than seen. Its song is an onomatopoeic whip-poor-will like that of its eastern congener, but lower in pitch and "less 'snappy' and slightly 'lazier'". It also makes a variety of other sounds including "a single, low, mellow quirt or queerp note", a growl, and a "growl-chuck".
ID text from Wikipedia, CC BY-SA 4.0

Rufous Nightjar
Antrostomus rufus
The rufous nightjar is 25 to 30 cm (9.8 to 12 in) long. Males weight 88 to 98 g (3.1 to 3.5 oz) and females 89 to 98 g (3.1 to 3.5 oz). It is almost entirely reddish brown, with a buff collar on the sides and back of the neck and a white band under the throat. The upperparts have dark brown streaks, the wings are spotted and barred with dark brown, and the underparts are speckled with dark brown and white. The wings have no white, unlike those of many others of its family. Voice: The rufous nightjar's song has been interpreted by several authors; two examples are "a loud, staccato chup, whi-whi-RIoh or chuck whip-his-WIDdow, repeated fairly rapidly" and "an energetic, rhythmic chuck, wick-wick-WEEoo." The song is usually given from a perch at any level up to 20 m (66 ft) above the ground.
ID text from Wikipedia, CC BY-SA 4.0

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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Mexican Whip-poor-will and Rufous Nightjar.