Chimney Swift vs Short-tailed Swift

In short

Chimney Swift and Short-tailed Swift are both small, dark swifts with similar flight patterns, but they can be distinguished by their tail and plumage characteristics. Chimney Swift has a more uniformly dark plumage and a longer, more tapered tail, while Short-tailed Swift has a slightly paler rump and a noticeably shorter tail.

Identification tips

• Tail shape: Chimney Swift has a longer, more tapered tail compared to the Short-tailed Swift's shorter tail.
• Plumage: Look for the slightly paler rump of the Short-tailed Swift in good lighting conditions.
• Habitat: Consider the habitat; Chimney Swifts are more urban, while Short-tailed Swifts prefer tropical forests.
• Behavior: Observe behavior around structures; Chimney Swifts are more likely to be seen near chimneys.

Size

Both species are similar in size, but the Chimney Swift appears slightly more elongated due to its longer tail.

Plumage

Chimney Swift is uniformly dark gray-brown, whereas Short-tailed Swift has a slightly paler rump, which can be a useful field mark in good light.

Behaviour

Both species exhibit rapid, erratic flight patterns typical of swifts, often seen in flocks. Chimney Swifts are more likely to be seen entering or exiting chimneys or similar structures.

Habitat

Chimney Swifts are often found in urban areas where they roost in chimneys, while Short-tailed Swifts are more commonly found in forested areas and open country in their tropical range.

Voice

Both species have similar high-pitched calls, but specific vocal differences are not well-documented.