I went out to give my girls a treat just now only to find one of my Americanas not doing so well. I looked her over well and could find nothing obviously wrong. Strong legs, no bites or sore spots. Wings work. Eyes are clear and focused. She seems to be breathing well. She just looks like she doesn't feel well. She laid an egg yesterday - a bit smaller than usual, but nothing to send up red flags. We even ate it last night and there was nothing different. The other 3 (in that coop) seem fine. My daughter gave them a treat earlier (left overs), is it possible something didn't set well in her tummy? She just looks so pitiful. Ariel is an Americana, about 10 months old and has been laying since November-ish. Help!