Chipmunk Chicks
Free Ranging
Predation is sadly a very real part of chicken keeping. I'm sorry you lost your chick. In addition to learning how to secure your coop/run, I would seriously consider trying to get at least two more chicks for her, if not 3-4 (and of course ensure you have enough space to accommodate them all. That way if/when one is lost for whatever reason, the remaining flock members still have each other.
Best of luck
