Ok, my 15 from MPC are just now past the 2 week old mark. They grow freakishly fast. They have all added weight and feathers are coming in quite nicely. My only concern right now is the fact that at some point they can fly out of the brooder when we take the lid off. The brooder is a large cow watering bin. Not sure of the gallon size, but it is really deep and about 5 foot long. At the rate these guys are growing, they can already launch themselves across the bottom of the brooder, just can't quite aim upwards...........yet. We are in the process of building the coop, which should be finished by sat, but I'm just not sure how quickly we should move them into it if they get to the point when they can escape the current brooder whenever I refill the feeders. They are accustomed to my hand and no longer fear it(feed them treats), but I worry what would happen if one were to escape into the shop area(where the brooder is located) and how much of a headache it would be to chase it down. I'm really happy that they are so healthy, but, not sure of what the next step is in their housing. Thoughts?