Birds of Europe - Gulls, Terns & Auks #2

Name all species of gulls, tern and auks that have been recorded in Europe, including escapees and vagrants. As a hint, taxonomic groups (not necessarily families) are given. In some cases, the name is displayed. This quiz features extinct species! (I) = invasive, escapee (A) = vagrant (E) = european endemic (Ex) = extinct