I've run into this problem a few times now...when I need to clean out the brooder I have to move all the chicks elsewhere until the process is complete, but I've had a hard time finding something to put them in that they can't escape from, that provides air, and that's big enough for them to stay in for an hour so. At first I was using a laundry basket with paper towels on the bottom and a screen over the top but at 1 month old they're too big for that now. The bantams are okay to deal with but the Easter Eggers are becoming enormous and will fly 6 feet up in the air whenever given the chance. I have some spare cardboard boxes but again, fitting all the chicks in there is a challenge. The biggest boxes are tall, but still not very wide at the bottom. What I've been doing recently is dividing them up into four or five different cardboard boxes so that there's enough space but that's very time consuming and it would be a lot easier to just have them all in one place. So does anyone have any ideas for what else I could do? P.S. I don't have a dog crate unfortunately, otherwise I'd use it P.P.S. Some way to fence them in outside in the grass would be great...problem is, the little ones get through very small cracks/holes and the big ones fly over most anything that's not completely covered.