Square-tailed Nightjar vs Bat-like Spinetail

In short

The Square-tailed Nightjar and Bat-like Spinetail are easily confused due to their nocturnal habits, but they differ significantly in structure and behavior. The nightjar has a more robust body and a square tail, while the spinetail is more slender with a distinctive forked tail.

Identification tips

• Tail Shape: Look for the square tail of the nightjar versus the forked tail of the spinetail.
• Flight Behavior: Nightjars are more likely to be seen resting or flying low, while spinetails are agile fliers often seen higher up.
• Plumage: Note the mottled appearance of the nightjar compared to the more uniform spinetail.
• Vocalization: Listen for the nightjar's call at dusk or dawn.

Size

The Square-tailed Nightjar is generally larger and more robust compared to the smaller, more slender Bat-like Spinetail.

Plumage

The nightjar has cryptic, mottled plumage that blends with its surroundings, while the spinetail is more uniform in color with less intricate patterning.

Behaviour

Square-tailed Nightjars are often seen resting on the ground during the day, whereas Bat-like Spinetails are more active in flight, often seen darting through the air like swifts.

Habitat

Both species can be found in similar open habitats, but the nightjar is more likely to be seen on the ground or low perches, while the spinetail is typically observed in flight.

Voice

The Square-tailed Nightjar has a distinctive, repetitive call, while the Bat-like Spinetail is generally silent or gives high-pitched calls in flight.