They're rambunctious little things, aren't they?
When I brooded in the bathoom, I never kept a lid or cover on the makeshift, Rubbermaid brooder(s). I liked watching them learn to fly and perch. It was only my bathroom, easy to clean up adventuring chick poops. Sometimes I would open the door to a chick standing in the middle of the bath mat, looking at me looking at it.
I cheered 'em on when they learned to make it to the edge of the brooder and perch there, talking to me while I ... Used the bathroom for its intended purpose. They'd come sit on my knees, some times.
I've caught them peering at their reflections in the chrome sink faucet.
I thought it was so cool when they would turn around and jump/flap BACK into the brooder on their own.
But I am a little different.
Now that I brood in a ginormous brooder in the shed, and it has screens and various hatches, with solid or screened covers, they don't get that kind of practice. Now and again, one will jump up through an open hatch as I fill feeders, which is cool. I haven't had to chase one down that decided to escape, yet.