Long curved wings, short square tail, white underneath and grey brown above.
This large swift has long curved wings and white markings. The plumage is predominantly grey-brown, glossed with green and the wings are long and pointed. The tail is short and square, with the protruding feather shafts giving a spiky appearance. The throat and undertail is white.
Almost exclusively aerial; over a wide variety of habitats.
Eastern and Northern Australia.
Non-breeding migrants to Australia, arriving from their breeding grounds in the northern hemisphere in October each year and leaving between May and August. Able to fly at speeds of up to 130 km per hour. An aerial bird, and for a time it was commonly believed that they did not land while in Australia. It has now been observed that birds will roost in trees, and radio-tracking has since confirmed that this is a regular activity.
Feeding and diet
Feeds on flying insects, such as termites, ants, beetles and flies. It catches the insects in flight in their wide beaks. Birds usually feed in rising thermal currents associated with storm fronts and bushfires and they are commonly seen moving with wind fronts. While feeding, it protects its eyes with a special membrane and a small ridge of feathers.