The ducking duck

Ducks, like most birds, do not have external genitalia. Instead, they have a cloaca, an external opening that serves as the only opening for the reproductive, digestive, and urinary systems. During copulation, ducks align their cloacas and transfer sperm from the male to the female. The male duck has a penis, which is kept inside […]

The duck family

Ducks are birds that belong to the family Anatidae, which also includes geese and swans. Within the family Anatidae, ducks are classified in the subfamily Anatinae, which includes all ducks except for the diving ducks and sea ducks, which are classified in the subfamily Aythyinae. There are many different species of ducks, and they can […]