21. Birds reproduce using their cloaca ; this occurs during a cloacal kiss in most birds. 22. The " tail " in the name is actually an extension of the male cloaca . 23. They were also used to replace the Cloaca Maxima with a system of underground sewers. 24. The Cloaca Maxima originally was built by the Etruscans as an open-air canal. 25. Before mating, the male smells the female, paying particular attention to the cloaca . 26. Overfeeding can sometimes be diagnosed by observing faeces trailing from the fish's cloaca . 27. They have a cloaca , or similar. 28. For the next three months, someone at the museum will feed Cloaca lunch and dinner. 29. This material, as well as the output of the intestines, emerges from the cloaca . 30. Copulation occurs when the male inserts one of his hemipenes into the female's cloaca .
