The gestation period of a Budgee bird is around 9 days. It willtake 17 to 23 days for the egg to hatch, after it has been laid. read more
No, not all mammals menstruate, most of them don't. They have an estrous cycle. It is similar and easily mistaken for a period but it's not the same thing. read more
Unlike mammals, most male birds don't have penises. Instead, both male and female birds have what's known as a cloaca. The cloaca is an internal chamber that ends in an opening, and through this opening, a bird's sex organs — testes or ovaries — discharge sperm or eggs. read more