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brown falcon
The brown falcon (''Falco berigora'') is a relatively large falcon endemic to Australia.
A number of plumage morphs exist, with the primary distinction being between the pale morph and the dark morph. Both morphs usually have dark brown upperparts and wing coverts. Dark morph birds have predominantly dark underparts, although some light streaking is common. Pale morph birds have white underparts that are varyingly streaked with brown, sometimes heavily so. Pale individuals may also have prominently white undertail coverts and these may be diagnostic.
The species name ''berigora'' has Aboriginal origins.
==Description==
Adults are usually long. They are found in light and dark forms and a variety of intermediates. Animals typically have red-brown heads with narrow black streaks with a light crown and off-white chin. Wings are a spotted red-brown with dark brown quills. Beaks are light blue/grey; eyes are brown. The falcons make a loud cackle call uttered frequently.
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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