I know I have at least two males, out of 4 frogs, just due to hearing three distinct chirsps from diferent three frogs. Another reason is I've seen two singles at either end of the tank and two that hang together under a coconut shell. Even at the slight chance I can get them to mate what should I look for, because one of the two in the Coconut shell rarely ever leaves the shell and its the larger of the two. I would love to look under the shell and see whats in there, but its now ened up becoming part of the landscape. Any suggestions on how to get them to do something, or on how to tell if they are already mateing. :? .