Nacunda Nighthawk vs Short-tailed Nighthawk

In short

The Nacunda Nighthawk is notably larger and paler than the Short-tailed Nighthawk, with strikingly contrasting black primaries. The Short-tailed Nighthawk is smaller, with a more uniformly dark plumage and a shorter tail. Both species are active at dusk and dawn, but their size and plumage differences are key for identification.

Identification tips

1. Size: Look for the larger size of the Nacunda Nighthawk. 2. Plumage: Note the pale body and contrasting black primaries of the Nacunda Nighthawk versus the uniformly dark plumage of the Short-tailed Nighthawk. 3. Habitat: Consider the habitat; Nacunda is more likely in open areas, Short-tailed near forests. 4. Activity: Both are active at similar times, so focus on size and plumage.

Size

The Nacunda Nighthawk is much larger with a more robust build, while the Short-tailed Nighthawk is smaller and more compact.

Plumage

Nacunda Nighthawk has a pale body with highly contrasting black primaries, whereas the Short-tailed Nighthawk has a more uniformly dark plumage.

Behaviour

Both species are crepuscular, being most active at dawn and dusk. However, the Nacunda Nighthawk often forages in open areas, while the Short-tailed Nighthawk prefers forest edges.

Habitat

Nacunda Nighthawk is found in open areas, often near water, while the Short-tailed Nighthawk is more associated with forest edges and clearings.

Voice

Vocalizations are not a primary distinguishing feature between these two species.