Grey-rumped Swift vs Costa Rican Swift

In short

The Grey-rumped Swift and Costa Rican Swift are both small, dark swifts, but they can be distinguished by their rump coloration and typical habitats. The Grey-rumped Swift has a distinctive grey rump patch, while the Costa Rican Swift lacks this feature. Both species are often seen flying high, but they may associate with different swift species.

Identification tips

1. Look for the grey rump patch on the Grey-rumped Swift. 2. Observe the throat; the Grey-rumped Swift has a paler throat. 3. Note the habitat; if seen near chimneys or similar structures, it might be the Grey-rumped Swift. 4. Consider associations with other swifts; Costa Rican Swift often feeds with other species.

Size

Both species are similar in size, typical of small swifts.

Plumage

The Grey-rumped Swift has a large, obvious grey rump patch and a pale throat, whereas the Costa Rican Swift does not have a distinct grey rump, appearing more uniformly dark.

Behaviour

Both species often associate with other swifts while feeding, typically flying high above the ground. The Costa Rican Swift is known to do this regularly.

Habitat

The Grey-rumped Swift is found in lowland and foothill forests, often nesting in chimneys or similar structures. The Costa Rican Swift's specific habitat preferences are less detailed but are likely similar.