It nests in holes in stonework and in crevices; its song is a repeated nasal wheeze.
From Rock Sparrow
Its call, a nasal, rising, very penetrating shriek, gives it away long before it is seen, and in the Spanish sierras it is one of the characteristic sounds of cliffs and ruins.
From Rock Sparrow
The yellow throat patch is its only distinguishing feature from house sparrows, and it is often hidden: the best way to identify it is by voice.
From Rock Sparrow
Despite its name, it is genetically closer to the African weavers than to other songbirds.
From House Sparrow
It is closely tied to human settlement across almost the whole world.
From House Sparrow
It is in steep decline in several European cities.
From House Sparrow
It forms huge colonies in trees, with dozens of nests in one tree.
From Spanish Sparrow
It often nests in the outer walls of the nests of white storks and large raptors: dozens of pairs build their nests among the sticks of another bird's nest, sheltered from predators thanks to the main occupant.
From Spanish Sparrow

Ecosystems