Little Swift

Apus affinis

Small swift with a square-tipped tail, broad outer wings and sharply-demarcated white rump. White on the rump extends to the sides and is visible from below. Note the obvious contrasting white throat. Superficially similar to house-martins, but lacks a white belly. Breeds both in natural cliff settings and in urban areas where it nests on buildings. Very vocal, particularly near the nest, giving a constant descending trill.

Identification

Little swifts are readily identified by their small size. Their wingspan is only 33 cm compared to 42 cm in the case of common swift. Their plumage is black except for a white throat and rump, the white rump patch extending onto the flanks. They have a short square tail, with all rectrices round-tipped. The flight is fluttering like that of a house martin, and the call is a high twittering. Like other swifts they are very short-legged. The legs are used for clinging to vertical surfaces only.

Taxonomy

Genus: Apus; Family: Apodidae; Order: Apodiformes.

Scientific name
Apus affinis
Authority
(Gray, JE, 1830)
Order
Apodiformes
Family
Apodidae
Genus
Apus

Range and habitat

Migration
Complete migrants

Behavior

Migration pattern: Complete migrants.

Conservation

Population trend: rising.

Population trend
rising

Photos

Distribution

Bird Calls

Other Birds

Gray-backed Shrike

Gray-backed Shrike

Lanius tephronotus

Found in forest edge, farmland, and plains, this adaptable and elegant small shrike is a common sight across much of its range. Gray crown and back contrast sharply with white throat, black mask and wings, and bright orange sides. Noticeably smaller than Long-tailed Shrike, with which it shares its range; unlike that species, lacks orange on the back. Regularly perches on exposed perches such as telephone lines, posts, and snags. Song musical and variable, a series of buzzy, whistled, and warbled notes; incorporates mimicry of other species. Calls include repeated harsh chattering notes, as well as high barking and piping notes.

Rufous Nightjar

Rufous Nightjar

Antrostomus rufus

Fairly large nightjar with a wide distribution from Costa Rica to southern Brazil. Very similar in appearance to Chuck-will’s-widow, but little range overlap. Most obvious feature on Rufous Nightjar is the pale collar around the neck; also note the overall dark rufous tones to the plumage. Males flash white outer tail feathers in flight. Strictly nocturnal and most easily detected by voice: an introductory “chuck” note followed by a rolling whistled “whip, whip, WEE-oo” (recalls Chuck-will’s-widow but with a different pattern and more rolling tone). Occurs in wooded habitats, often around forest edge with thick understory.

Honeyguide Greenbul

Honeyguide Greenbul

Baeopogon indicator

Unusual dark greenbul with upright posture that does strongly resemble a honeyguide. Males have a white eye and females a dark one. Both sexes show a large white patch in the outer tail. Found in the upper portions of lowland forest. Usually in pairs or small groups. Most often detected by call: a slow series of mewing whistles. Similar to Sjöstedt's Greenbul, but has darker gray underparts, and male further distinguished by its pale eye. Distinguished from honeyguides by its different shape, especially the longer tail. Flight is direct, unlike undulating flight of a honeyguide.

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