It is funny, I went out looking several nights in a row and they were just singing away. When I shone the light on them they kept singing. I learned that if you caught them in mid song they would keep going, so I waited and found them as they would start. They moved around a little but gave me some great shots. I wish some of the others had come out so well. They treat me to a song most nights and yest these are green tree frogs. My pond is a whole other world at night!