I'm having a hard time catching a video, so for now I'll just describe the issue until I have a chance to record her. Basically, I noticed yesterday she gasps intermittently with her eyes squinted. She had coccidiosis during her first week, but I treated her and she seemed to have made a full recovery. She's still bright eyed, running around, eating and drinking. I think she may have gotten into my duckling's water, though (where they clean their beaks), so I'm suspecting she may have an issue with her crop? The way she's gasping looks very similar to the way my hens were gasping a little while back when they had sour crop from drinking muddy, poopy rain puddles. Is my chick too young for acidified copper? What other symptoms should I be looking for in order to diagnose her? I plan on checking her crop when I get home from work tonight, sometime around 2 am. Any advice is appreciated.