La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Factors affecting the breeding success of the grey heron (Ardea cinerea) in northern Poland
Auteurs :	D. Jakubas, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (146(1) JAN 2005)
Article en page(s) :	27-33
Langues:	Anglais
Résumé :	The aim of this study was to estimate the importance of factors affecting the breeding success of the grey heron ( Ardea cinerea) in three colonies in the northern Poland ( Mosty, Kiersity and Ka. ty Rybackie), differentiated in population size, habitat type and feeding areas used by birds. The highest mean number of fledglings ( 39 - 51 days old) per nest in 2000 - 2002 combined was recorded at Ka. ty Rybackie (3.2 +/- 0.91 SD). Lower values were recorded at Kiersity ( 2.5 +/- 1.11) and Mosty ( 2.8 +/- 1.20). Breeding success increased with the size of the heronry ( r(7) = 0.77, P

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