Assuming that you have the husbandry conditions correct and that the animal is eating regularly. The active at night isn't a typical. I have 4 active snakes in my group of the 4 one is out most evenings and is very active he is quite young (a little over a year) This is one hot topic, but if everything is good with your set up and the animal is eating well and is not sick they are sometimes quite active. There is lots of evidence about climbing, in the northern part of the habitat range it is more common to find aviary prey than rodent in sub adults. Adults show a dis interest in climbing in some cases.