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How Do Male Spiders Get Away With Giving Worthless Gifts to Females?

Male gift-giving spider carrying his wrapped gift

In many animals, males give females a gift in the hope of getting to mate with her. This might sound overly simplistic, but this really can be how it happens. For example, kingfishers will catch fish to give to females as part of their courtship. However, having a system like this means that there is [...]

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