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A photo of a Rock Sparrow (Petronia petronia)
Rock Sparrow

Rock Sparrow

Petronia petronia

The Rock Sparrow, or Rock Petronia (Petronia petronia), is a small passerine bird, the sole representative of its genus. It is characterized by a robust conical bill and a distinctive yellow throat spot, which is a carotenoid-based trait indicative of attractiveness and social status in both sexes. This bird measures approximately 14 cm in length and sports a strong whitish supercilium, a less pronounced crown stripe, patterned brown back and wings, and streaked underparts.

Identification Tips

When attempting to identify the Rock Sparrow, look for its larger bill compared to the House Sparrow, the prominent whitish supercilium, and the subtle crown stripe. The key distinguishing feature is the yellow throat spot, which can be challenging to see but is crucial for accurate identification. The bird's overall plumage is an array of earth tones, providing excellent camouflage against its rocky habitat.

Habitat

The Rock Sparrow favors barren rocky hills, where it can be found in crevices and walls, a preference that is reflected in its name. It is also known to inhabit human settlements that offer suitable rocky environments.

Distribution

This species has a wide range, breeding from the Iberian Peninsula and western North Africa, across southern Europe, and extending through the Palearctic to Siberia and north and central China. While it is largely resident in the western part of its range, Asian populations are known to migrate southward or descend from mountainous areas in response to seasonal changes.

Behaviour

Rock Sparrows are gregarious birds, often seen in flocks. They exhibit a variety of mating patterns, with social monogamy being the most common. However, both sequential and simultaneous polyandry have been observed. The size of the male's yellow breast patch has been correlated with parental investment and nestling growth, suggesting a link between ornamentation and reproductive success.

Song & Calls

The Rock Sparrow's vocalizations are described as loud and wheezy, contributing to the soundscape of its rocky habitats.

Breeding

During the breeding season, Rock Sparrows nest in rock crevices or wall gaps, laying four to five eggs. The species demonstrates a preference for mates with larger yellow patches, which influences male brood defense behaviors and parental investment. In alpine colonies, females predominantly provision the young, while in Asian colonies, both parents contribute equally.

Diet and Feeding

The diet of the Rock Sparrow consists mainly of seeds year-round, with the addition of berries in the autumn. Come spring, their diet shifts to include invertebrates such as caterpillars and grasshoppers, which are also fed to their offspring.

Conservation status

The IUCN Red List classifies the Rock Sparrow as Least Concern, indicating that the species does not currently face any significant threats to its survival on a global scale.

Rock Sparrow Sounds



Recorded by: © 
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