Page "Barn Swallow" Paragraph 1

There are six subspecies of Barn Swallow, which breed across the Northern Hemisphere.

Four are strongly migratory, and their wintering grounds cover much of the Southern Hemisphere as far south as central Argentina, the Cape Province of South Africa, and northern Australia.

Its huge range means that the Barn Swallow is not endangered, although there may be local population declines due to specific threats, such as the construction of an international airport near Durban.