I have my turtle tank in my room and I have two young RES. I got them both together back in May. They have started "talking" in the middle of the night. I usually feed them around 8 pm and turn the UV light off around 10 pm. In the middle of the night one or both of them start making noise that I have never heard before. Kind of a whining noise. I checked on them they seem absolutely fine. The first time I thought one was stuck or hurt but they are just in the water with their head sticking out making noise. Is this a warning sign of something else? Is it completley normal?
Thanks in advance.
Dan


