Quote Originally Posted by UncleChester View Post
You don't really have to worry about them breeding spontaneously in captivity if you did add another one. They generally need to be cycled (go through a cooling period) to breed and then kept in very warm and humid (or even raining) conditions and have an appropriate place to lay the eggs. I don't cycle mine and my female shows absolutely no interest in the advances of the male she's in with.
But if you get a male and female from the wild at the same time during breeding season it is possible that they will breed since they've already been threw a natural wild cycle. All wild grays really need to breed is a water source (a water bowl large enough for them both would suffice) and a leaf hanging into the water to hold the eggs. The likelyhood of the eggs all hatching or the tads not dieing from lack of space is pretty low but its still possible for them to breed since they've already been cycled. After this year, though, they wouldn't breed unless they are artificially cycled.