The present paper reports that in 3-month-old red-legged partridges (_Alectoris rufa_) early experience of certain foods, restricted to the 10 days after hatching, determines some later shifts of preference towards known foods. Vegetable seeds, insect larvae or commercial food dust were the foods used during the treatment period. The increase of preference, measured as grams of food eaten, was independent of the type of food tasted after hatching. The adaptive and applied implications of such a tendency are discussed.
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