I have noticed lately my stimson sticks his head into his water bowl,seems to swish it around then removes it and moves around his enclosure and seems to scratch the side of his head on the rocks and branches in his enclosure, he is not due to shed for some time yet or has not showed any signs of a shed, can anyone tell me why he may be doing this, or is this a normel practice that i have not picked up on until now. Cheers