We hatched some birds from eggs and starting at about 1 week old, our EE boy (I think, he's got huuuge legs!) has been chasing all the other birds around. Day and night, there is constant "help!" peeping and "ouch!" screeching peeps from the other chicks. It seems to stop only when I'm observing, then the EE boy decides that I'm more interesting...for a minute. No blood from pecking yet, and he's not aggressive with me, though I get the feeling like he will be when he gets bigger. He runs from my hand and is the least social, he fights harder than any of the other birds when I'm holding him. There are 6 chicks and about 16 sq feet of space, we have perches for them. Seems like enough space, esp since they're more-or-less huddled under the heat lamp a good portion of the day.