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Titre :	Breeding of the Northern Pintail & IT;Anas acuta & IT; in eastern Denmark 1970-2010
Auteurs :	Hans Erik Jorgensen, Auteur
Type de document :	Article
Dans :	Dansk Ornitologisk Forenings Tidsskrift (111(2) 2017)
Article en page(s) :	59-65
Résumé :	During the second half of the 20th century, the Northern Pintail has been a scarce and local breeder in Denmark, especially in West Jutland and southeastern Denmark, where most of the population is concentrated. The entire Danish population was estimated at 200 pairs in 1970, 1985 and 1995 (Ferdinand 1971, 1980, Dybbro 1985, Sorensen 1995, Grell 1998). The breeding habitats are brackish meadows near brackish coasts and lagoons. In Denmark the species does not breed by fresh water lakes.& para;& para;This paper describes the status of the Northern Pintail 1970-2010 in eastern Denmark (Zealand, Mon, Lolland, Falster; see Fig. 1). This region has regularly held more than 50% of the Danish Northern Pintail population. In the 1970s, eastern Denmark had more than 30 regular breeding sites (Fig. 1) and a total population of 95-110 pairs (Tab. 2). Since then the Pintail has disappeared from the majority of the localities, and the species has undergone a marked decrease at other sites (Tab. 1). The present population in eastern Denmark is about 20 pairs (Tab. 2), which means a reduction of 80% compared to the early 1970s. In West Jutland there has been a similar trend, and around 2010 the entire Danish population was estimated at 40-50 pairs.& para;& para;The reason for the decrease is not known with certainty, but changes in habitat management (reduced cattle grazing) and increased predation (more red foxes Vulpes vulpes) may be important factors. However, even habitats with good breeding conditions have been abandoned by the Pintail. The species may disappear as a Danish breeder in the not too distant future.

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