The swallows and martins are a group of passerine birds in the family Hirundinidae which are characterised by their adaptation to aerial feeding. Swallow is used colloquially in Europe as a synonym for the Barn Swallow.
Within the swallow, the name "martin" tends to be used for the squarer-tailed species, and the name "swallow" for the more fork-tailed species; however, there is no scientific distinction between these two groups. The family contains around 83 species in 19 genera.
The Bahama swallow is listed as an endangered species
Swallow Facts for Kids. Kiddle Encyclopedia.