I repurposed an old baby play yard into a brooder. It's about 3ftx3ft and 2 1/2 feet tall. I made a insertable cardboard liner that lines the bottom and sides, it has plastic lining the bottom for waterproofing in case the water spills or leaks (it also makes for easy cleanup) I recently put in some sticks for perching and some bird mirrors and toys to help with boredom. My heat lamp is hung securely from a hook off the ceiling and is exactly 24" from the bottom of the brooder and it's set to one side of the brooder that way the chicks can get closer or further depending on their mood. Right now it's set at the perfect temp with enough space to play, my chicks LOVE their new an improved brooder. (They were in an old plastic tub until they got too big) My question is...... The sides of my brooder are 2 1/2 feet tall, should I worry about them flying out? Or is it tall enough I don't have to worry? I recently saw my bantam sultan trying to fly off her perch but she didn't get that high. (The perch is only a few inches off the bottom of the brooder.