The whiskered tern (Chlidonias hybrida or Chlidonias hybridus) is a seabird of the tern family Sternidae. This bird has a number of geographical races, differing mainly in size and minor plumage details.C. h. hybrida breeds in warmer parts of Europe and Asia. The smaller-billed and darker C. h. delalandii is found in east and south Africa, and the paler C. h.