Hi Ren and welcome! I did not know that about quail. So theyāre more aggressive to each other than chickens, ducks, turkeys, or geese are? Wow. But like you said, probably some kind of weaselā¦ did you find any openings where it may have gotten in the coop? They can fit through a space the size of a quarter Iām also amazed at how self-sufficient you are. That is so fantastic good for you. Keep it up.!!