Social Studies
Social Studies, 14.04.2020 17:27, ezelle

Spalding found that if newborn birds were prevented from hearing their mother's call for five days, they would still recognize her; if prevented from hearing the mother for 10 days, they would never learn to recognize her. That is, he demonstrated the existence of what later was called.

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Spalding found that if newborn birds were prevented from hearing their mother's call for five days,...

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