The Wildlife Conservation Society has called for protection of a recently discovered site in Nigeria where millions of migratory swallows (Hirundo rustica) gather to roost each night. Scientists say the site is only one of two known roosts in Cross River State, a coastal region in southeastern Nigeria. Preliminary surveys indicate that the site may attract millions of swallows and be of international significance. The roost appears to be under threat of destruction from advancing farms and may require conservation measures to survive.