I accidentally came up with the idea. I was looking for a large plastic bin thinking I would keep it in our guest house and then move it when our two Kerry Blue Terriers came. My plan was to put the bin in the tub if I was in there working. As I was on my way to pick up the chicks it occurred to me. I asked my fabulous Hen Lady and she said it was a great idea. The seem to be flourishing. We put a wood hamster house in it but placed it upside down. They use it has a perch and this morning they were taking turns claiming up on it and practicing flying off. It was pretty cute!