La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The Eagle Owl Bubo bubo in western Bohemia - extinction foretold?
Auteurs :	Libor Schroepfer, Auteur ; Jan Bures, Auteur ; Pavel Ruzek, Auteur
Type de document :	Article
Dans :	Ornithologischer Anzeiger (44(2-3) DEC 2005)
Article en page(s) :	141-145
Résumé :	Between 1983 and 2003 the Czech Ornithological Society collected data on the status of the Eagle Owl in western Bohemia (Plzen and Karlovy Vary region). According to population estimates the population numbers have declined there from about 150 breeding pairs in 1990-1993 to 50-100 in 2000-2003. To this development corresponds a continuous decline in reproduction success: Though the long-term average reproduction success of 273 broods recorded between 1983 and 2003 reaches with 50.5 % still similar numbers as other European populations, between 1996 and 2003 the reproduction has declined to an average of 32 % successful broods of all recorded broods. Most of the losses are suspected to be due to human persecution. Because of the very low breeding success a further decline of population numbers is expected, if no specific measures will be taken.

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