La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Predation of montagu's harrier Circus pygargus broods in brandenburg (Germany).
Auteurs :	Torsten Ryslavy, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (126(4) 2005)
Article en page(s) :	381-384
Résumé :	Data on 106 breeding attempts of Montagu's Harrer in the period 1997 to 2005 have been analysed, regarding nesting habitat, breeding success, protection of the nest sites, reproduction and brood losses. Significant differences occurred between the breeding success of broods with special protection measures against predators and agricultural works (2.67 fledged young per breeding pair) and without nest protection (0.69 fledged young/bp). The overall annual reproduction rate of 1.51 fledged young per bp is too low to keep a viable population.

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