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Rock sparrow
:''The term rock sparrow can also be used to refer to the genus ''Petronia'' as whole''
The rock sparrow (''Petronia petronia'') is a small passerine bird. This sparrow breeds on barren rocky hills from the Iberian peninsula and western north Africa across southern Europe and through central Asia. It is largely resident in the west of its range, but Asian birds migrate to more southerly areas, or move down the mountains.
==Description==
This species is a large stocky sparrow, 15–17 cm in length, with a strong whitish supercilium and weaker crown stripe. It has a patterned brown back and wings, streaked underparts, and a diagnostic, but hard-to-see, yellow throat spot. ''Petronia petronia'' are monochromatic, with a distinctive yellow patch on their upper breast that starkly contrasts the earth tones of their plumage. This carotenoid-based trait is present in both sexes, and plays an important role during the breeding season, signalling both attractiveness and social status. This bird has a loud wheezy song.
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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