In the early spring I keep the young manouria in an enclosure where it gets more sun and is warmer, but when it gets hot I move them to a more shaded and cooler one.This year I enlarged it some so their are more and different plants for them to access. in less than 24 hours they were eating a plant I wasn't sure they would touch since they have never seen one before. Can you tell what type of plant it is? It is one that most people would not feed to a tortoise, and it is not the fern , even though they do eat the fiddlehead mine have never eaten any mature part of a fern.