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Biology, 07.11.2019 02:31 yailin9562
Northern flickers are woodpeckers of the eastern united states. males, but not females, have black feathers that resemble a moustache extending from the bill along each side of the head. whereas aggression between males is common, male and female members of breeding pairs are not aggressive toward one another. however, when scientists painted a moustache on female members of breeding pairs, their mates attacked them. this suggests that- aggression is a learned behavior.- the moustache is a neutral stimulus.- aggression is a conditioned reflex.- the moustache is a releaser for aggression.- the moustache is a conditioned stimulus.
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