Marsh Harriers Circus aeruginosus target Teals Anas crecca at roosts according to potential availability of vulnerable prey

Mathieu Guillemain (1) , Michel Lepley (1, 2) , Hervé Fritz (3) , Nathalie Hecker (4)

1 ONCFS - Office National de la Chasse et de la Faune Sauvage
2 Station Biologique de la Tour du Valat
3 CEBC - Centre d'Études Biologiques de Chizé
4 Association des Amis des Marais du Vigueirat

The mean daily rate of foraging flyovers by Marsh Harriers in a given site is better predicted by the number of vulnerable Teal they can force to take flight (equivalent to patch size) than by the total number of Teal present.

Domaines: Biodiversité et Ecologie; Environnement et Société

Mathieu Guillemain, Michel Lepley, Hervé Fritz, Nathalie Hecker. Marsh Harriers Circus aeruginosus target Teals Anas crecca at roosts according to potential availability of vulnerable prey. Bird Study, 2007, 54, pp.268-270. ⟨hal-00185951⟩