Abstract:Social preference was assessed across 9 weeks in domestic chicks which were either living with a live companion (another chick or a guinea pig) or in isolation. Experimental chicks lived for 3-week periods with the original companion, with an alternate companion of a different species, and again with the original companion. Control subjects lived continuously with their original companion or in isolation. Weekly preference tests initially indicated strong preference for the original companion, regardless of th… Show more
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