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(noun) The cloaca is the single posterior opening for a bird's digestive, urinary and reproductive tracts and is used to expel feces and lay eggs. The cloaca is found on the rear of the body under the base of the tail, covered by feathers on the extreme lower abdomen.
Rating Newest Oldest. Best Answer: Like all birds, owls have a cloaca - a single opening through which they excrete, mate and lay eggs. Most birds do not have a penis (ostriches and ducks are a couple that do), and mate simply by pressing their cloacas together in what is known as a 'cloacal kiss'.