La Tour du Valat

Article

Colonization and population growth of yellow-legged gull Larus cachinnans in south-eastern Poland: Causes and influence on native species.

Piotr Skorka, Auteur ; Joanna D. Wojcik, Auteur

Dans Vogelwarte (42(1-2) Juli 2003)

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Article

Density and behavior of mistle thrush wintering in the Niepolomice Forest (southern Poland).

Piotr Skorka, Auteur ; Joanna D. Wojcik, Auteur

Dans Vogelwarte (42(1-2) Juli 2003)

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Article

Habitat utilisation, feeding tactics and age related feeding efficiency in the Caspian Gull Larus cachinnans

Piotr Skorka, Auteur ; Joanna D. Wojcik, Auteur

Dans Journal of Ornithology (149(1) JAN 2008)

The feeding behaviour of the Caspian Gull Larus cachinnans was analysed in southern Poland in 2001. During the pre-breeding period, most birds foraged on a refuse dump and some foraged in a river valley. During incubation, similar numbers of bir[...]

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Article

Numerical and behavioural response of Black-headed Gull Chroicocephalus ridibundus on population growth of the expansive Caspian Gull Larus cachinnans

Piotr Skorka, Auteur ; Joanna D. Wojcik, Auteur ; Rafal Martyka, Auteur ; Magdalena Lenda, Auteur

Dans Journal of Ornithology (153(3) JUL 2012)

We monitored population size from 1996 to 2003 and studied behavioural interactions (in 2001) between the native Black-headed Gull Chroicocephalus ridibundus and an expansive, opportunistic predator, the Caspian Gull Larus cachinnans, at water r[...]

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