A widowed duck finds a new mate through the personal ads. Crackers, the female Muscovy Duck, and her mate, Jack, were inseparable. “All day long they’d spend the day in that shelter, and when one ...

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Charles Darwin made Victorians splutter into their tea when he wrote The Descent of Man, subtitled “selection in relation to sex.” In it, he not only claimed that animals and birds select their mates ...