Swamp Nightjar vs Square-tailed Nightjar

In short

The Swamp Nightjar and Square-tailed Nightjar are both medium-sized nightjars with subtle differences in tail shape and plumage. The Swamp Nightjar has a more rounded tail, while the Square-tailed Nightjar has a distinctly squared-off tail. Both species are cryptically colored, but their habitats and vocalizations can aid in identification.

Identification tips

1. Tail Shape: Look for the rounded tail of the Swamp Nightjar versus the squared tail of the Square-tailed Nightjar. 2. Habitat: Note the habitat; Swamp Nightjars are more likely in wet areas, while Square-tailed Nightjars prefer drier environments. 3. Vocalizations: Listen for the repetitive call of the Swamp Nightjar compared to the more varied call of the Square-tailed Nightjar.

Size

Both species are similar in size, typical of medium-sized nightjars.

Plumage

Both species exhibit cryptic plumage with mottled browns and grays. The Swamp Nightjar tends to have a slightly more uniform appearance, whereas the Square-tailed Nightjar may show more contrast in its patterning.

Behaviour

Both species are nocturnal and exhibit typical nightjar behaviors such as ground foraging and hawking for insects at dusk and dawn.

Habitat

Swamp Nightjars are often found in wetter habitats such as marshes and swamps, while Square-tailed Nightjars prefer drier, open woodlands and savannas.

Voice

The vocalizations of these species differ, with the Swamp Nightjar having a distinctive, repetitive call, while the Square-tailed Nightjar's call is more varied and complex.