In the past year I bought several pair of California quails from different breeders. In the beginning I kept them as pairs in cages, I fed them game bird feed or sometimes chicken layers if the game bird feed run out of stock. They seem to be happy and healthy and were laying eggs almost everyday. But then I found the fertility rate of the eggs were very low, usually only one or two hatched in a dozen. I did some research on the internet and found that California quails are better kept in flock and on solid ground. So I found a large closet in the house, built a wired door and kept them there altogether. However, this doesn't seem to increase their fertility rate at all and after a while they began to kill each other. I don't think it's disease because they died very suddenly with no signs of diarrhea or lethargic or respiratory signs, and they are well nutrition. Now half of the birds I put inside were gone. I don't know what to do with them. Does anybody have more experience with California quails?