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Australian hobby
The Australian hobby (''Falco longipennis''), also known as the little falcon, is one of six Australian members of the family Falconidae. This predominately diurnal bird of prey derives its name ‘''longipennis''’ from its long primary wing feathers. It occurs throughout Australia and other neighbouring countries with migrating individuals found on the islands of Indonesia and New Guinea〔Debus, S. (1998). The birds of prey of Australia. Oxford University Press, Australia.〕
== Description ==
Smaller than other falcons,〔Slater, P., Slater, P. & Slater, R. (1986). The Slater field guide to Australian birds. Lansdowne Publishing Pty Ltd, The Rocks, NSW.〕 the Australian hobby is relatively slender and long winged.〔Simpson, K., Day, N. & Trusler, P. (1996). Field guide to the birds of Australia. Penguin Books Ltd, Victoria, Australia.〕 Its plumage varies in colour depending on sex, age and environment with a darker form in humid areas and a lighter form in drier environments.〔 Generally the hobby displays a black cap and mask with a whitish forehead and half-collar. Underparts can be blue-grey or rufous and streaked darker.〔 The cere in adults is a pale yellowish grey, the eye ring is pale blue, the eyes are brown and the feet are dull yellow.〔 Females are larger in size between 34 – 35.5 cm and males are generally between 30 – 32 cm in length with a wing span between 66 – 87 cm.〔 The Australian hobby is easily confused with the peregrine falcon (''Falco peregrinus'') however the hobby is slenderer, with longer and thinner wings and is a less powerful flyer.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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