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Article
Tom W. Pennycott, Auteur ; David Grant, Auteur ; Mardik F. Leopold, Auteur ; Ruedi G. Nager, AuteurThe diet of Herring Gulls Larus argentatus breeding in southwest Scotland in 2018 and 2019 was investigated by analysis of regurgitated pellets. Marine food items were found in 24.2% of 314 pellets, with the major items being Norway Lobster Neph[...]
Article
Jan Veen, Auteur ; Hanneke Dallmeijer, Auteur ; Cindy J. G. Van Damme, Auteur ; Mardik F. Leopold, Auteur ; Thor Veen, AuteurA frequently used method to estimate diet composition is based on the identification of fish otoliths present in pellets and feces. However, whether pellets and feces provide similar unbiased estimates of the diet remains poorly understood. The [...]
Article
Michael P. Harris, Auteur ; Mardik F. Leopold, Auteur ; Jens-Kjeld Jensen, Auteur ; Erik H. Meesters, Auteur ; Sarah Wanless, AuteurMost mortality of Atlantic Puffins occurs outside the breeding season but little is known about the species’ diet at that time. The stomach contents of 176 Puffins shot legally for food around the Faroe Islands between October and January in thr[...]
Article
Michael P. Harris, Auteur ; Mardik F. Leopold, Auteur ; Jens-Kjeld Jensen, Auteur ; Erik H. Meesters, Auteur ; Sarah Wanless, AuteurMost mortality of Atlantic Puffins occurs outside the breeding season but little is known about the species\' diet at that time. The stomach contents of 176 Puffins shot legally for food around the Faroe Islands between October and January in th[...]
Article
Mardik F. Leopold, Auteur ; Piet Wim van Leeuwen, Auteur ; Harry Horn, Auteur ; Kees Camphuysen, AuteurDans Limosa (73(4) 2000)Some 6000 Great Northern Divers in NW-Europe. They are elusive birds, living dispersed along the rocky shores of Iceland, Norway, the British Isles and Brittany. What the birds actually do there in winter is largely unknown. There are very few d[...]
Article
Edward Soldaat, Auteur ; Mardik F. Leopold, Auteur ; Erik H. Meesters, Auteur ; Christopher JR Robertson, Auteur
Article
Martin J. Baptist, Auteur ; Mardik F. Leopold, AuteurHuman impacts on water transparency may affect plunge-diving seabirds. We studied prey capture success of Sandwich Terns Sterna sandvicensis as a function of six environmental variables during the breeding season. We observed diving terns in the[...]
Article
Henrik Skov, Auteur ; Jan Durinck, Auteur ; Mardik F. Leopold, Auteur ; Mark L. Tasker, AuteurObjective criteria are needed for ranking marine sites when examining candidate areas for protection measures. We suggest a Marine Classification Criterion (MCC) which allows the application of the widely used Ramsar 1% criterion for wetlands fo[...]
Article
Mardik F. Leopold, Auteur ; Kees Bruin, Auteur ; Kees Camphuysen, Auteur ; Chris Winter, Auteur ; Ben Koks, AuteurDans Limosa (76(4) 2003)Ospreys migrate by the hundreds through the Netherlands each year, on their way from Fenno-Scandian breeding grounds to African wintering quarters and vice versa. In northern Europe, these birds use mainly freshwater habitats for breeding, but i[...]
