Answer:
The Quick Answer:
Yes birds do.
However ...
They don't urinate through a separate orifice. In birds and reptiles there is generally one opening which serves or feces, urine, reproduction and egg laying. This opening is called a cloaca.
The Details:
Like the reptiles, birds are primarily uricotelic, that is, their kidneys extract nitrogenous wastes from their bloodstream and excrete it as uric acid instead of urea or ammonia via the ureters into the intestine. Birds do not have a urinary bladder or external urethral opening and uric acid is excreted along with feces as a semisolid waste. However, birds such as hummingbirds can be facultatively ammonotelic, excreting most of the nitrogenous wastes as ammonia. They also excrete creatine (C4H9N3O2), rather than creatinine (C7H4N3O) like mammals. This material, as well as the output of the intestines, emerges from the bird's cloaca. The cloaca is a multi-purpose opening: waste is expelled through it, birds mate by joining cloaca, and females lay eggs from it. In addition to waste discharge from the cloaca, many species of birds, such as owls, regurgitate pellets of undigestible parts of their prey.