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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Breeding birds of a large oak forest in central France: relationship to habitats, threatened species and historical aspects (2015)
Auteurs :	Pascal Denis, Auteur ; Arnaud Trompat, Auteur
Type de document :	Article
Dans :	Alauda (83(2) 2015)
Article en page(s) :	99-115
Résumé :	Different teams studied the breeding bird population of the Troncais forest, covering some 100km(2) of oak woodland in central France. Many references, some dating back to the 19th century, allowed to draw up a comprehensive list of the breeding bird species of this large forest. The common breeding birds were studied using 121 point counts (IPA) in order to determine the frequency and occurrence of the species across the 200-year forest cycle. Specific studies were carried out to show the population size of raptors, Black Stork Ciconia nigra and European Nightjar Caprimulgus europaeus. The woodpecker populations living on large territories were investigated using adapted territory mappings covering 3,700 ha, completed by habitat analysis. Territory mapping method was used to get an approach of some remarkable bird species over more than 400ha 94 breeding species have been found in recent times: 82 are regular, 6 are irregular and 6 others disappeared recently. The early and older forest stages are the richest in species numbers. One pair of Black Stork was present since 2003 but breeding was not recorded every year. The raptors (Booted Eagle Hieraaetuspennatus, Eurasian Goshawk, Common Buzzard, Accipiter gentilis European Sparrowhawk Accipiter nisus) have decreased, both in diversity and numbers since 1980 and 1990. The European Nightjar amounted 40 churring males and appeared to be stable. About 25 pairs of Grey-headed Woodpecker Picus canus, Green Woodpecker Picus viridis and Black Woodpecker Dryocopus martius and about 50 breeding pairs of Lesser-spotted Woodpecker Dryobates minor were assessed. The density of species like Stock Dove Columba oenas, Common Redstart Phoenicurus phoenicurus, Wood Warbler Phylloscopus sibilatrix and Pied Flycatcher Ficedula hypoleuca in old woodlands and Common Stonechat Saxicola torquatus and Red-backed Shrike Lanius collurio living in early forest stage were calculated. Most of the threatened species are not strictly forest species (reedbeds, forest edge or early forest stage).

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