We woke up last Sunday to find 3 out of our 19 chicks were being pecked on in their brooder. We assumed it was probably because they were all outgrowing the brooder (or bored, or both), so we quickly separated the 3 injured and put the remaining 16 out in the coop with a run so they'd have more room. Now that the 3 are healed up, we'd like to put them out in the coop with the others. At this age (3 1/2 weeks), what is the likelihood that there will be a problem? I've read many posts in the forum about how to re-introduce older chickens, or how to introduce new chickens, but these are all the same age and have been separated for only a week. Do you think it would be ok to just put the 3 in there while they are all out in the run, or do we still need to do some kind of slow introduction? Thanks for any advice.