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Despite attempts to relate vocalization of animals to their welfare status, very little is known in farm animals and in precocious birds. We analysed vocal expressions of 50 chicks during step by step social isolation. 91.20% of the recorded vocalisations (n=21 583 calls) consisted of four main...

Marx, G.; Leppelt, J.; Ellendorff, F.
Elsevier Science B.V., Amsterdam, Netherlands
Applied Animal Behaviour Science, 2002, 75, 1, pp 61-74