2006-10-05 07:19:26 · 6 answers · asked by daftoldwoman 4 in Pets ➔ Birds
Most birds mate by contact at the cloaca area. Sperm transfer from the male occurs when each partner's cloaca everts and tiny papilae protruding from the posterior walls of the male's sperm sacs in his cloaca are brought into contact with the opening of the female's oviduct.
A few birds have an erectile, penis-like organ but not all birds. This intromittent organ is a special modification of the ventral wall of the cloaca and it exits in birds such as tinamous, most waterfowl, currasows and ostriches. Chicken and turkeys have a small penis, which enlarges with lymph fluid that is added to semen in the vas deferens in the reproduction system. Ejaculation of this fluid occurs through a longitudinal phallic groove. Why such different birds have evolved such an organ while others do not is not clear.
2006-10-05 07:22:52 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Of course they do, but it's retractable, it only appears when they're doing the deed. Kind of like dogs in that respect.
It's so hard to identify the sex of a bird unless the plumage varies between genders, that some of them can only be sexed by way of an operation that examines the interior of the cloaca, the avian equivalent of the genitourinary system.
2006-10-05 07:23:00 · answer #2 · answered by anna 7 · 0⤊ 1⤋
Willow is correct in every aspect there. the funniest part of this fact is that Ducks do have a penis but cockerels don't. Sometimes ducks are raised under chickens and the drakes try to tread the hens when they grow up. The hens get a nasty surprise.
2006-10-05 13:22:43 · answer #3 · answered by Aquila 4 · 0⤊ 0⤋
most birds have a penis so that they can mate.
2006-10-07 20:35:34 · answer #4 · answered by akyleryan 2 · 0⤊ 2⤋
Ask a vet!!!!
2006-10-05 07:28:07 · answer #5 · answered by Radio Ga Ga 73 4 · 0⤊ 0⤋
i don't know
2006-10-05 11:09:54 · answer #6 · answered by Anonymous · 0⤊ 0⤋