Monday, April 16, 2012

>Aegotheles cristatus (Australian Owlet-nightjar

Australian Owlet-nightjar

Australian Owlet-nightjar
Conservation status
Scientific classification
Species:A. cristatus
Binomial name
Aegotheles cristatus
(Shaw, 1790)
The Australian Owlet-nightjarAegotheles cristatus, is a nocturnal bird found in open woodland across Australia and in southern New Guinea. It is colloquially known as "Moth Owl". It is the most common of the owlet-nightjars, and the best known of this secretive family. It is the most common nocturnal bird in Australia, and despite suffering from predation and competition by introduced species it is not considered threatened.

Australian Owlet-nightjar

Description and habitats

At night in Wollombi Valley, New South Wales, Australia
The Australian Owlet-nightjar is a small to medium sized owlet-nightjar with grey upperparts and a white, barred front and a distinct dark and pale patterning on the head. In the north of Australia females can also have a rufous morph. The plumage is overall paler in desert populations. It is adapted to live in openwoodland, with more pointed wings and larger feet, unlike most of the rest of the family that live in dense forest (though some can and do live in such habitat inQueensland and New Guinea) . It lives in a variety of habitats as well as open woodland, including mangrove swamps, grasslands, mallee scrub as well as dense forest.


The Australian Owlet-nightjar feeds at night by diving from perches and snatching insects from the air, ground or off trunks and branches, in the manner of a flycatcher. It may also feed on the wing. It feeds on most insects, particularly beetlesgrasshoppers and ants. During the day they roost in hollows in trees, partly for protection from predators and partly to avoid being mobbed by other birds that mistake them for owls.
The Australian Owlet-nightjar nests mainly in holes in trees (or in other holes and crevices), which is provisioned with leaves by both of the pair. It is thought that the frequent addition of eucalyptusleaves is because they act as a beneficial insecticide. Three or four eggs are laid, and incubated by the female for just under a month. Both the adults feed the chicks, which fledge after a month. The young birds are reported to stay close to the parents for several months after they fledge.

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