Spot-tailed Nightjar vs Rufous Nightjar

Spot-tailed Nightjar and Rufous Nightjar can be challenging to differentiate, but the Spot-tailed Nightjar is best identified by its distinctive tail pattern with white spots on the outer tail feathers. Rufous Nightjar, in contrast, has a more uniform rufous coloration and lacks the prominent tail spots.

1. Look for white spots on the outer tail feathers for Spot-tailed Nightjar. 2. Note the more uniform rufous coloration of Rufous Nightjar. 3. Consider the habitat and range: Spot-tailed is more localized in northern and central South America, while Rufous is more widespread east of the Andes.

Both species are similar in size, typical of nightjars, with no significant size difference to aid identification.

Spot-tailed Nightjar has white spots on the outer tail feathers, which are diagnostic. Rufous Nightjar is more uniformly rufous without prominent tail spots.

Both species feed on flying insects by sallying from a perch, typically on the ground, and nest directly on the ground.

Spot-tailed Nightjar is found in grasslands, savannas, pastures, and agricultural lands, while Rufous Nightjar is more widespread across northern and eastern South America, often in similar open habitats.

Specific vocalization differences are not detailed in the sources, and further research may be needed to distinguish them by sound.