My little RIR chick (feathered, about 2 or 3 months old I guess) has one injured leg. She lays with it straight behind her. I cant feel a break or any warmth over a particular area. There is no visible injury at all. She's been in a birdcage since I noticed. She is not moving much, but is doing a gasp type thing and resting with her eyes closed. When she gasps, she stretches out her neck. None of my other 20 chickens are having any problems. Is the gasping from the stress of the injury? Or does this sound like an illness? I'm terrified of gapeworm! She eats fruit/ veggies, but doesn't seem interested in chicken feed, and I havent seen her drink, so I gave her some water in a dropper.