The four Delichon species are members of the swallow family of birds, and are classed as members of the Hirundininae subfamily which comprises all swallows and martins except the very distinctive river martins See more

Delichon martins are 13–15 cm (5–6 in) long, blackish blue above with a contrasting white rump, and with white or grey underparts. They are chunky, bull-headed and short-tailed birds, and have feathering on the toes and tarsi. The common house … See more

Breeding
The Delichon martins were originally cliff nesters, breeding in colonies situated under an overhang … See more

Source:
• Delichon polgardiensis (late Miocene of Polgardi, Hungary)
• Delichon pusillus (Pliocene of Csarnota, Hungary) See more

Delichon is an Old World genus with all four species breeding only in the Northern Hemisphere. The common house martin is a widespread … See more

The International Union for Conservation of Nature (IUCN) is the organisation responsible for assessing the conservation status of species. A species is assessed as subject to varying … See more

• Turner, Angela K.; Rose, Chris (1989). A handbook to the swallows and martins of the world. London: Christopher Helm. ISBN See more