Behavior: Animal Attraction

Gender bending and gender swapping. Pregnant dads. Shooting sex organs. There's more than one way to get it on, as the birds, bees and bonobos have discovered

FEMALES SCORNED When males are in short supply, females can become fierce competitors. Female house sparrows and great reed warblers, whose males often take two mates, may try to smash a rival's eggs. Unattached smooth newt females will steal a male's sperm packet just as he deposits it for his mate. Midwife toads are even more proactive: jealous females will tear copulating couples asunder.

LOVE CALLS It may not be Barry White, but the nonstop bellowing of a male red deer over several days is apparently quite effective at inducing reproductive readiness in females. Other species use more subtle signals to...

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