Wow! Your birds are so clean! And you have dirt. Amazing.Here are the meat box heroes at 4.5 week old. They have definitely entered their awkward stage, you can see some pink skin where their feathers have not caught up.
We've had 2 weeks of rain in the swamp and have morass and quagmire. The meat birds get less muddy. But they are still brown. They also prefer the standing water pools to the clean drinking water. Go figure.
This flock prefers to find their own place to sleep rather than the tractor that provides protection. I'm having to scoop them up and place them into the tractor nightly. Gets old. And their toes are sharper as they get weighty. But they wonder around and graze.