Sickle-winged Nightjar

The sickle-winged nightjar is 18 to 20 cm (7.1 to 7.9 in) long; one male weighed 43.7 g (1.5 oz). The adult male's upperparts are grayish brown spotted with dark shades of brown. The wings have a hooked "sickle" appearance due to the shape of the primary flight feathers. They are generally grayish brown, with blackish brown, cinnamon, and white markings. The chin is buffish white with brown bars; the throat brown with a cinnamon tinge, brown bars, and buffy streaks; the breast brown with buff spots and streaks; and the belly and flanks pale buff with brown bars. Voice: One description of the sickle-winged nightjar's song is "a series of soft chip, tchup, or tchut notes"; another is "some chirping, cricket-like sounds" and a third is "a soft, single tick". A reported flight call is "a harsh, nasal gzee gzee".