Great woodswallow

The great woodswallow occurs naturally in tropical moist montane forest, usually amongst clearings with dead trees, most typically dead emergents above the canopy of primary rainforest. Although the species has been known to be common ever since the first Western explorers of New Guinea,[4] it has adapted very well to human manipulation of the landscape and is especially common near Highland towns such as Mount Hagen and Goroka.[3] Great woodswallows are found as high as 3,000 metres (9,800 ft), but are most abundant between 1,000 metres (3,300 ft) and 2,500 metres (8,200 ft). Unlike the Australian dusky woodswallow,[5] great woodswallows do not reduce their body temperature on cool nights.[2]

Like its smaller relatives, the great woodswallow is a fast-flying aerial insectivore feeding chiefly on large flying insects. It is generally regarded as the smallest bird in the world that habitually soars on updrafts over long distances, but it will also use its feet to manipulate its insect prey.

Great woodswallows are highly social, flying in flocks of up to twenty birds, and nomadic over their montane forest habitat.[3] It is common for very close “knots” of the species to allopreen on small posts for up to ten minutes. They usually breed between August and December, and the nest is like other woodswallows: a flat platform of grass or twigs in a tree hole or stump, though higher above the ground than other species in the genus.[3] Great woodswallows are cooperative breeders, with most young adults remaining for a number of years with their parents to raise young.

Group preening