Hello, This is our first time having chickens,and we are having a problem with them pecking out tail feathers of each other until they are bloody. My brooder box is 12 feet long by 2 feet wide and 2 feet high. We have 55 brown leghorn chicks. I thought that maybe they were too crowded,but most things I've read say 1/4 sq ft. per chicken for the first month then 1/2 sq ft. up to 8 weeks.So the brooder should be big enough until almost the 2 month mark. Because of the pecking problem, we partitioned off a space in the main coop to about 8 feet by 6 feet and moved them there yesterday with the only trouble is keeping the temperature up. I have 3 250watt lamps hanging pretty low but cannot get the temp up to 85 degrees. I may have to move them back to the brooder if I can't figure out my temperature issue as it cools of to about 50 degrees on some nights still here in the Pacific Northwest. But I can't have them killing each other either. Any help or information would be greatly appreciated! BTW,this site is absolutely fantastic!!! Cheers!