It is a colonial species associated in the breeding season with urban settings or isolated structures in rural areas, nesting in buildings, especially in holes in the walls or under roof tiles.
In Extremadura, the clutch (of between 4 to 5 eggs) is laid at the end of April or early May, with an incubation period of 28 days. Both sexes share incubation duties. The young fledge at around 35 days old. There is a high level of philopatry (57% of juveniles will return to their natal colonies) and a high faithfulness to breeding colonies (72% of adults). However, almost 75% of individuals will change their nest or mate annually.
