Spot-tailed Nightjars rest on the ground or low branches by day and become active around dusk and at night. Adult males show white tips on the outer tail feathers; the species ranges from southeastern Mexico to Paraguay.
Adult males have brown plumage with buff markings and fine bars, plus broad white tips on the outer tail feathers. Females look similar but lack those white tail marks.
It is active at dusk and at night, resting on the ground or low branches by day. It launches from the ground to hunt and returns to the same starting point.
An extinction-risk assessment has not been added yet.