text: how do birds hove sex?   most male birds do not have a penis, though one duck has a penis longer than its body!  mostly, the female bird crouches, the male bird gets on her back, generally grasping her neck feathers.  she flips her tail upwards and around, exposing the entrance to her cloaca while pushes his tail down, so his cloaca touches hers. this is called a "cloacal kiss"!  he jets semen into her cloaca.  it is often very quick.  as for the duck with a penis, i am not sure how they use it.