Lilith is my buff brahma pullet that got crushed in a pile-up a few weeks back. She's growing normally, eats, drinks, and when free-ranging she behaves as all the other chicks do. But I have never heard her make a sound, any sound and while she will forage with the rest, she's also quite content to just sit on my lap and watch. She doesn't even cluck when I pick her up as the others do. It's impossible for me to remember whether she made noise before the accident. So I've just been wondering. Is she just super mellow or brain damaged?