Clever Creatures
The Infinite Monkey Cage
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What's the Most Intelligent Behaviour in Chickens?
Research has been on sperm competition, which is females mate more than one mal. We did this experiment where we presented hens to a cockerel. And if you do that, the number of sperm in successive matins goes down. But ifs somebody knew, it's called the cooledge effect, and he would put in a whole new bunch of sperm. So his intelligence was in terms of recognizing the female,. having some kind of strategy in his head about how many sperm he's going to transfer.
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