Landon Sunrich wrote: I was reading the other day that eggs can sit around at cool temperature for about a week before they start loosing their hatchability.
So long as they don't warm up to hatching temperature they
should be fine for a week or more. Our muscovies will lay every day for a while and when they feel they have enough they will start to sit on them, so the oldest eggs would have been nearly two weeks old before incubation started. I think this about normal for most birds. Certainly our
chicken eggs will keep for up to two weeks with no problem. If I want a batch for the incubator I usually save the eggs from the best hen or hens until I feel I have enough to do a whole 'batch'.