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Article
Since 1993, the number of breeding pairs has been estimated in Danish Sandwich Tern Sterna sandvicensis colonies by nest counts conducted in mid-late May by experienced counters. The results, reflecting minimum estimates of the actual breeding p[...]
Article
Christof Herrmann, Auteur ; Hans Wolfgang Nehls, Auteur ; Jens Gregersen, Auteur ; Wilfried Knief, Auteur ; Rolf Larsson, Auteur ; Jaanus Elts, Auteur ; Maria Wieloch, AuteurAt the beginning of the 20(th) century, the Baltic Sea did not form part of the breeding range of the Sandwich Tern. However, during the first half of the century the species expanded its range gradually to the northeast, colonising Skane in 191[...]
Article
Christof Herrmann, Auteur ; Hans Wolfgang Nehls, Auteur ; Jens Gregersen, Auteur ; Wilfried Knief, Auteur ; Rolf Larsson, Auteur ; Jaanus Elts, Auteur ; Maria Wieloch, AuteurAt the beginning of the 20(th) century, the Baltic Sea did not form part of the breeding range of the Sandwich Tern. However, during the first half of the century the species expanded its range gradually to the northeast, colonising Skane in 191[...]
Article
Thomas Bregnballe, Auteur ; Morten Frederiksen, Auteur ; Jens Gregersen, AuteurDans Ardea (94(3) 2006)Great Cormorants Phalacrocorax carbo sinensis breeding in the same colony often vary markedly in where they winter and in their date of arrival. The main aim of this study was to explore whether date of arrival, fledgling production and lifetime[...]
