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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	The Red Kite in Sweden
Auteurs :	Nils Kjellen, Auteur
Type de document :	Article
Dans :	Dansk Ornitologisk Forenings Tidsskrift (92(4) 1998)
Article en page(s) :	347-353
Langues:	Anglais
Résumé :	The Red Kite was a common breeder in the southern third of Sweden up to the middle of the last century. Alter a steep decline it was protected in 1919. Estimates of the Swedish population are given in Tab. 1. The Swedish Red Kite Project has been running since 1976 financed by WWF. The population, being highly concentrated to Scania, has made a remarkable recovery, rising front a low of about 50 breeding pairs around 1970 to an estimated 750 pairs in 1997. The numbers in a study area in southern Scania is followed in detail each year. In this area the population has increased from 38 pairs in 1987 to 106 pairs in 1996 (Tab. 2). In spite of the markedly increased densities the breeding result has been good since 1987, with an average of 1.71 fledged young per breeding attempt. The number of migrating Red Kites at Falsterbo in autumn mirrors the population trend (Fig. 1). Juveniles constitute the majority of migrants, with an average of 79% during the latest twelve years. Ringing recoveries show that most Swedish kites migrate to France and Spain in winter. Increasing numbers of adult kites spend the winter in Scania nowadays, with around 750 kites in the winter 1994/95. Although organised winter feeding of kites ceased in 1990/91, no negative effects on the breeding results have so far been shown, and breeding, results in the seasons following the rather cold winters during the last few years were likewise close to normal. Analysis of pellets collected at a winter roost in January shows that the kites primarily take road kills and waste from farms and garbage dumps in winter. All since the start of the project food remains have been collected at the nests in Scania in June and over 2000 food items identified. Among the mammals, rabbit and small rodents dominate, with smaller amounts of garbage and road kills. Birds comprise 76% of the total number of items. The most important prey is young corvids, taken shortly after they leave the nest. Other common species are Pheasant, Black-headed Gull, Wood Pigeon and Starling. Some pairs, nesting close to lakes, take much fish, although these probably are underrepresented in the material.

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