White-winged Swallow

The White-winged Swallow, Tachycineta albiventer, is a small, vibrant bird measuring 14 cm in length and weighing between 14 to 17 grams. It boasts iridescent blue-green upperparts and pure white underparts, including the rump. The secondary flight feathers are edged with white, contrasting with the otherwise black wings and tail. Both sexes appear similar, though females may exhibit slightly less white on their wings. Juveniles are distinguishable by their grayer underparts and overall duller appearance, with less pronounced white on their wings.

Identification Tips

To identify the White-winged Swallow, look for its distinctive white-edged secondary feathers and absence of a white line above the lores, which sets it apart from the similar Mangrove Swallow. The bird's dark brown eyes, black bill, and legs are also characteristic features.

Habitat

This species is typically found in lowland areas close to bodies of water such as rivers and lakes, up to elevations of around 500 meters.

Distribution

The White-winged Swallow is a resident breeder in tropical South America, with its range extending from Colombia and Venezuela to Trinidad and Argentina. It is notably absent west of the Andes. While largely non-migratory, the southernmost populations do migrate, likely wintering in the Guianas, Venezuela, and Colombia.

Behaviour

These swallows are known for their direct flight paths and flapping flight style. They often perch on branches near water between foraging flights, which are conducted at low altitudes to catch flying insects.

Song & Calls

The call of the White-winged Swallow is a harsh "chirrup" or a buzzing "zweeed" that rises in pitch. Its alarm call is a short, harsh sound.

Breeding

Nesting occurs in tree holes, between boulders, or in man-made structures, with nests lined with feathers and seeds. Located a few meters above water, the nests contain clutches of three to six white eggs.

Diet and Feeding

The White-winged Swallow primarily feeds on flying insects, which it catches in flight. It forages over water and occasionally over land, returning to perches near water between feeding attempts.

Conservation status

The IUCN classifies the White-winged Swallow as Least Concern due to its extensive range, stable population, and large population size.