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What animal does? ???????
Animal Behavior
Niko Tinbergen ?????
Why do birds sit on EGGS? Why do birds SIT on
eggs? Why do BIRDS sit on eggs? WHY do birds
sit on eggs?
Causation
Development
Evolutionary
Function Survival Value
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????????????? ?????(ethology),???????????????
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??????????????????(behavioral
ecology),?????????????????????????????,???????????
??? (survival value)???? (fitness)??????
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