Have 2 5 week old RIR chicks. We live in FL so on a day like today when it is warm, I take them out for a "field trip". Hehe one of them keeps scratching the ground then laying down and fluffing her feathers. She ends up with grass and dirt all over her. Could she already be trying to dust bathe? I put some wood ash in a bin and put it in the field trip pen. But so far, nothing. ALSO she keeps just laying down and has heavy breathing. None of the other chicks do that!?????