I noticed that ever since I put my ribbon snake Pickle in the outdoor pen she's always basked at the highest point in the enclosure; on top of the centerpiece log a few inches from the top. Anyways, she seems to always bask her for some reason, even when there's a lot of heat or a little. Do garters/ribbons recognize routine or show preference? Yet another possibility for my science fair to test, but if some one knows the answer or we have enough evidence then we can close the case on this one.