"A few days" & "probably be ok" would be a problem long term. Well, scratch that plan long term. Brooders for everyone.I have brooded them together successfully for a few days. The quail chick is going to try to shove itself under the chicken chicks. The chicken chicks will probably peck at the quail chick. It will probably be ok, but keep an eye on them for a while and be prepared to set up a second brooder.