Delichon

Delichon is a genus of small migratory passerine birds in the swallow family, Hirundinidae. Its species are known for compact bodies, short tails, and nests built from mud.

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Hirundinidae: Hirundinidae is the bird family comprising swallows and martins. Delichon is one of the family's genera.
Bird flight: Bird flight is powered movement through air using wings, feathers, and coordinated muscular action. Delichon species spend much of their lives flying to feed and migrate.
Bird migration: Bird migration is the regular seasonal movement of birds between breeding and nonbreeding areas. Delichon species migrate between northern breeding grounds and warmer winter regions.
Bird conservation: Bird conservation is the protection and management of bird species, populations, and habitats. Delichon populations depend on suitable nesting sites and insect-rich feeding grounds.
Passerine: Passerines are birds in the order Passeriformes, characterized by perching feet and specialized vocal organs. Delichon belongs to this large order of perching birds.
Hirundine flight: Hirundine flight is the agile, sustained flight characteristic of swallows and martins. Its maneuverability helps Delichon catch insects above open ground and water.
Common house martin migration: Common house martin migration is the seasonal movement of European and Asian breeders toward sub-Saharan Africa and South Asia. It illustrates the long-distance movements of the genus's best-known species.
Common house martin conservation: Common house martin conservation addresses threats and management measures affecting Delichon urbicum populations. The species' nesting habits make building changes and nest removal consequential.
Common house martin: The common house martin is a small migratory swallow, Delichon urbicum, found across Europe and Asia. It is the best-known species in the genus.
Mud nest: A mud nest is a bird nest formed from pellets of wet earth, often attached to a structure or cliff. Delichon species build enclosed mud nests beneath sheltered surfaces.