The hill swallow (Hirundo domicola) is a diminutive member of the swallow family, measuring a mere 13 cm (5.1 in) in length. It boasts a striking blue back contrasted with browner wings and tail, while its face and throat radiate a vibrant red hue, and its underparts are of a dusky complexion.
Distinguishing the hill swallow from its relatives can be done by observing its shorter and less forked tail, setting it apart from the barn swallow and the closely related welcome swallow.
This bird is commonly found along the coasts and is now increasingly observed in forested uplands.
The hill swallow is a resident species that breeds in the southern regions of India and Sri Lanka, with some local seasonal movements noted.
The hill swallow is a swift and agile flyer, engaging in aerial acrobatics as it pursues its insect prey.
Unfortunately, the guide lacks information on the song and calls of the hill swallow.
A neat cup-shaped nest is the hallmark of the hill swallow's breeding efforts. These nests are meticulously crafted from mud pellets and are often found under cliff ledges or on man-made structures such as buildings, bridges, or tunnels. The interior is lined with softer materials, and the clutch may contain up to four eggs.
The guide does not provide information on species similar to the hill swallow.
The hill swallow is an aerial insectivore, sharing this trait with other swallows and the unrelated swifts. It predominantly feeds on insects, with a particular fondness for flies, all captured while in flight.
The hill swallow is currently listed as Least Concern on the IUCN Red List, indicating that it is not at immediate risk of population decline.