Tree Frogs in Oakdale?

I was speaking to an ex-Idle Hour community resident, who lived in Oakdale in the late 1950′s through 1970. He told me there were tree frogs “on both sides of the river” at that time and they made a distinctive sound. He mentioned that they are not around any more, and he misses the sound. Do you remember tree frogs in Oakdale? What happened to them?