Apr 23, 2012 · Most birds do not have a penis. Most birds have a little lump called a cloaca. During the breeding season when hormones are flowing the cloaca swells and birds can get a cloacal protuberance. Above, a bird bander blows on a Tufted Titmouse belly and note the spot below the bare patch–that’s a cloaca. Both sexes have the cloaca, so for most Author: Birdchick. Feb 19, 2012 · – The males of most bird species do not have a penis, both sexes have a multi-tasking orifice called the cloaca. Copulation generally involves a few seconds and a mere touching of these organs in order to deposit sperm. Birds with penises. In the world of birds, penises are a rarity.
Jun 06, 2013 · Most birds don’t. There are almost 10,000 species of birds and only around 3 percent of them have a penis. These include ducks, geese and swans, and large flightless birds . 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 Author: Elizabeth Palermo.
Jun 06, 2013 · Scientists Discover the Genetic Reason Why Birds Don’t Have Penises Developing bird embryos do have penis precursors, it turns out, but a genetic signal causes the penis cells to Author: Joseph Stromberg. Nov 23, 2018 · This question was first asked in June 2015. It is now November 2018 and this answer is going to be the first answer to this question. I'm uncertain whether that is because none of Quora's now 300 million unique users know the answer, or because no.
Jul 13, 2006 · For the best answers, search on this site https://shorturl.im/qQhUa Actually we know that birds could not have evolved from a dinosaur. The fingers do not match. Theropod dinosaurs have fingers 1-2-3 and birds have fingers 2-3-4; Dinosaurs were ground dwellers, and flight evolving from the ground up is biophysically implausible.Status: Open. Almost all birds do not have penises or vaginas. They have what's called a cloaca, which is technically the anus. Urates, feces, urine, and reproductive fluids pass through this one opening. The eggs also pass through here, in females. For reprodu.