La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Urban gulls: problems and solutions
Auteurs :	Peter Rock, Auteur
Type de document :	Article
Dans :	British Birds (98(7) JUL 2005)
Article en page(s) :	338-355
Résumé :	Urban-nesting by Herring Larus argentatus and Lesser Black-backed Gulls L. fuscus in Britain began in the 1940s, but became established as a national phenomenon in the late 1960s and early 1970s. Since that time, numbers have grown exponentially, fuelled by ample food, high breeding success and apparently limitless habitat. Many towns and cities in Britain & Ireland now support growing colonies and it is estimated that, in 2004, the total population of roof-nesting gulls exceeded 120,000 pairs. Herring and Lesser Black-backed Gulls are opportunistic and omnivorous, taking advantage of a wide range of feeding situations. The urban breeding population in the Severn Estuary Region has increased from an estimated 2,632 pairs in 1994 to 23,930 pairs in 2004. Further increases on this scale would see the population in this region exceed 200,000 pairs by 2014 and a national population of more than one million pairs of urban-nesting gulls.

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...