The mangrove swallow (Tachycineta albilinea) is a passerine bird that breeds in coastal regions from Mexico through Central America to Panama. It is non-migratory, but may make seasonal movements. There is a swallow in coastal Peru that resembles the mangrove swallow, but lacks the white head stripe. It is possibly a subspecies, but the geographical separation suggests that this little known form is a distinct species. The flight of the mangrove swallow is typically direct and low over the water. It frequently perches. Its call is a rolled jeerrrt.