The White-Tailed Nightjar (Hydropsalis cayennensis) is found from Costa Rica to North Brazil. Its natural habits are open, windswept savannas, pastures, and low scrub. Matures are 21 cm (8 inches) in height and 40 g in weight.
This small bird is above grayish, vermiculated with dusky and buff. With pale rufous nuchal collar. Wing-coverts spotted and remiges barred with buff. Throat buffy-white, breast cinnamon-buff, belly pale buff, bill black, and feet grayish. It feeds on flying insects like beetles, bugs, moths, damselflies and hymenopterans.