Spectacled tern Spectacled tern The spectacled tern ("Onychoprion lunatus"), also known as the grey-backed tern, is a seabird in the family Laridae. A close relative of the bridled and sooty terns (with which it is sometimes confused), the spectacled tern is less common than the other members of its genus and it has been studied less. The three species, along with the Aleutian tern were recently split into a new genus "Onychoprion" from "Sterna" (Bridge "et al.", 2005). They resemble the sooty tern but with a grey back instead of a black one. Their breast and underparts are white, and they have
Longdon-on-Tern Longdon-on-Tern Longdon-Upon-Tern (also known as Longdon-on-Tern or colloquially Longdon) is a village in east central Shropshire, England. It is in the unitary district of Telford and Wrekin, and is approximately east of Shrewsbury and north-west of Telford. Longdon-Upon-Tern is situated on the River Tern, a tributary of the River Severn. Settled since at least the Normans, the village is notable as the site of the Longdon-on-Tern Aqueduct, the first large-scale cast iron navigable aqueduct, designed and built by Thomas Telford for the canal. The aqueduct is Grade I listed and a preserved as a scheduled ancient monument. The name Longdon