Finally in 3-D: A Dinosaur's All-Purpose Orifice - The New York Times
Bird Reproduction and Anatomy - How Do Birds Reproduce?
Cloacal Kiss gone wrong | Osprey Tales
How did dinosaurs have sex? | BBC Earth
cloacal kiss – Feathered Photography
Cloacal Kiss
cloacal kiss Archives -
Twitter 上的 ZoologiMY:"In case if you ever think it is a kind of cloacal kissing, it kinda is but not exactly correct. For example...this is the true form of cloacal kissing. https://t.co/5dd0IHXttD" /
Chicken Mating: How Does That Work? | The Chicken Chick®
They call the moment of birds' mating the "Cloacal Kiss." According to Merriam-Webster, the cloaca is the common chamber into whi… | Bird mates, Mammals, Amphibians