Rock sparrow

                                      Rock sparrow

The rock sparrow (Petronia petronia) is a small passerine bird in the sparrow family Passeridae. It is the only member of the genus Petronia. It 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

The rock sparrow is similar in size to a house sparrow but with a larger more conical bill.^[6] It is around 14 cm (5.5 in) 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.^[7] This bird has a loud wheezy song.