This morning I went to give my quails clean food and they all rushed to it and ate happily (same food I always give them) and an hour later I checked on then and 3 quails and sitting. I went out and usually when I open the cage they start going crazy and running away, but these ones just stayed there, even when I reached out to pick them up! I put them down and they swayed. What's going on?!?!?! A disease? Are my other birds going to get it?