IUCN threat status:

Vulnerable (VU)

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Biology

The blue swallow arrives on the breeding range at the end of September and constructs cup-shaped nests from mud and grass on the inside of sinkholes cavities, aardvark burrows and old mine shafts. The breeding system of the blue swallow is not well understood although co-operative breeding has been widely recorded in this species. The nests are lined with fine grass, animal hair and white feathers. Normally, three white eggs are laid. They are incubated by the female for 14 days, and the chicks are fed for approximately 22 days until they fledge. Once fledged, the young spend the next couple of days around the nest site before disappearing. Most blue swallows will nest for a second time before returning to the over-wintering grounds in April (2). Blue swallows feed on small, soft-bodied flies and other arthropods, catching them on the wing (2).

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Source: ARKive

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