Sarah Kraak, who also works at Berne, set out to prove this point experimentally.
ECONOMIST: Birds do it, bees do it | The
And, as Dr Kraak demonstrated, they are indeed being choosy.
Indeed, Dr Kraak's analysis of the male's courtship dance is that it is designed as much to let him stop a female from laying in his nest before he has assessed her as it is to show himself off.
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