This is my first post, so forgive me if I mess anything up. Today one of my four day old quail chicks dropped dead. It was one of the larger ones, and had never shown any symptoms that I noticed. This is my second brood of quail and I can't think of anything that could of caused this. He was lying dead near the warm side of the brooder, eyes closed on his side. He looked like he was sleeping. His mouth was closed and his nostrils were clear. There's 18 of them but all the poop I see looks normal. How worried should I be? What could have happened? Any input would be lovely. Thank you.