By Zeltner E.   Hirt H.   in British Poultry Science

ISSN:1466-1799|44|4|533-537

Taylor & Francis Ltd‎(2003)‎

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By Zeltner E.   Klein T.   Huber-Eicher B.   in Animal Behaviour

ISSN:0003-3472|60|2|211-216

Elsevier‎(2000)‎

Access to resources Favorite 8.53734