La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	A 25-year study of breeding Greenshanks Territory occupancy, breeding success and the effects of new woodland
Auteurs :	Nick Christian, Auteur ; Mark H. Hancock, Auteur
Type de document :	Article
Dans :	British Birds (102(4) APR 2009)
Article en page(s) :	203-210
Résumé :	Breeding Greenshanks Tringa nebularia have their British stronghold in Sutherland and Caithness, which hold 44% of the national population. In a 1,200-ha study area in north Sutherland, a 25-year study found a high density of breeding Greenshanks, with up to ten occupied territories each year. Based on 189 territory-years, territory occupancy averaged 52%, with strong variation between years (20-91%) and territories (24-78%). For 51 nests, the mean hatch rate was 59%. Predation accounted for 62% of known nest failures. Territory occupancy and breeding success were not linked to distance from a new, predominantly native, woodland scheme. However, the woodland is still young, and the work should be repeated at a later date.

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