In my experience hatchability in quail is reduced after about seven days of storage. I agree pretty much with Stewaw on storage temperature, although 60 degrees is what I have used and what is generally recommended in a lot of the literature. You want to make sure temperature doesn't get so warm as to have the embryos start developing which is not good in the storage stage! The temperature at which the embryo starts developing was in one of the articles in the last Gazette. But I can't remember right now what it was and don't have a magazine handy with me. You might also keep in mind that research has shown that relative humidity of upwards of 70% or so during storage is desirable. This is something that large producers pay a lot of attention to, but smaller breeders often don't. More is involved in setting up the necessary environment but it can pay off with better hatches.