Have a day-old chick that has both wings with thinning feathers on them. She looks like she takes a wing feather in her mouth and runs her beak from the feather's base to the tip. In doing this, she is stripping the fluff off all her wing feathers (both her left and right wings). We got her from TSC today along with another chick and 2 ducks that are not exhibiting this behavior. I am using Save-A-Chick in their water in case this was stress related. Any suggestions?