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Article
Piotr Skorka, Auteur ; Magdalena Lenda, Auteur ; Dawid Moron, Auteur ; Rafal Martyka, Auteur ; Piotr Tryjanowski, Auteur ; William J. Sutherland, AuteurCollisions with cars are an important mortality factor for many wild animals. Measures to mitigate road mortality are costly so should be implemented using cost-effective measures in locations where the road mortality is consistently highest and[...]
Article
Piotr Skorka, Auteur ; Joanna D. Wojcik, Auteur ; Rafal Martyka, Auteur ; Magdalena Lenda, AuteurWe 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[...]
Article
Rafal Martyka, Auteur ; Joanna Rutkowska, Auteur ; Anna Dybek-Karpiuk, Auteur ; Mariusz Cichoń, Auteur ; Kazimierz Walasz, AuteurRecently, a number of studies have shown that female birds are able to control the sex of their progeny at the stage of the gamete. There is also some evidence that females adjust their investment in offspring depending on the sex of the embryo [...]
