The Whiskered Tern (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.
This species breeds in colonies on inland marshes, sometimes amongst Black-headed Gulls, which provide some protection. The scientific name arises from the fact that this, the largest marsh tern, show similarities in appearance to both the white Sterna terns and to Black Tern.
Well spotted…. best shot one can get!