title: Origins, Occurrence and Movements of Sandwich Tern Thalasseus Sandvicensis in Southern Africa
abstract: The Sandwich Tern Thalasseus sandvicensis occurs throughout the coastal regions of southern Africa but tends to favour major bays, coastal lagoons and suitable river mouths.There is a great disparity in counts at any one locality from year to year.Overall austral summer population was estimated at 10 000-15 000 in a good year and probably <10 000 in a poor year.Banding recoveries indicated origins in western Europe (354 birds recovered) and, rarely, from the Black or Caspian seas (two birds reco
journal: Marine ornithology