I brought home 4 new bantam chickens on Saturday. This morning I noticed one of the light Sussex bantams had a gunky, squinty eye. The other eye is fine and bright. She never had this when we picked her up.She seems less active than the others but not sickly so, she just doesn't run as fast and she gives up and lays down if cornered. She also wheezes when I pick her up, like heavy wheezy breathing. I thought this was just her panicking at first but maybe it's a respiratory issue? Does anyone know what this could be? I thought maybe just an eye infection but the slight lethargy and the wheezing is worrying me a bit. Any ideas? They are new chickens so stress could be a factor.