ocr: WHOOPER SWANS MATING To mate, the male MALE - - EMALE BIRDS do not have to mate neck grips with the bis female's beak H to lay eggs. But if they do not, and clim bs onto their eggs will not develop. Mating is her back. ar rapid process that usually takes place on the ground or on a perch. Some waterbirds, including swans and ducks, FEMALE mate on the water. Swifts are among the few birds known to mate in the air.
