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Individual and geographical variation in the territorial calls of tawny owls strix aluco in eastern Europe

Sergey Mikhailovich Shekhovtsov, Auteur ; Alexander Viktorovich Sharikov, Auteur

Dans Ardeola (62(2) DEC 2015)

Territorial calls (hooting) of two tawny owl subspecies, Strix aluco aluco (the eastern European subspecies) and Strix aluco willkonskii (the Caucasian subspecies), were recorded from October 2007 to february 2013, to study variation between ind[...]

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