I don't like free ranging a group of crix like this for several reasons. If the cage is full of bushy plants as it should be, the crix will be hard for the cham to get at before they hide out of sight. Then, when the cham is asleep, they can easily chew on him and cause injuries. Also, the loose crix can eat feces, dead bits of leaves, etc. that may have molds and bacteria all over them. Crix lose their gutload pretty quickly and if you don't have any in the cage your cham is getting a crix full of stuff you probably don't want him to eat. But, on the other hand, feeding crix out of a small bowl or dish is boring for the cham and can lead to tongue muscle problems. I have a compromise that seems to work for me. On days I feed, I put them in a larger plastic bin like a critter keeper with some gutload in it and wedge it in the bottom of the cage near a plant. The crix can move around and attract attention, they can keep themselves fed, the cham can hunt from the rim of the box and exercise their tongue and brain. I take the bin out at night and put uneaten crix back in their bin.