I'm new to owning pheasants, and the birds (2 hens) have been laying for about 2 weeks, and I've put 12 eggs into the bator, and need to know how long I can let the other eggs sit before they need to go into the incubator. I have collected about another dozen eggs, and at one time I was told to only keep for 7-10 days then put them into the bator. Just the other day I talked with a guy on the phone about birds, and he told me that he kept eggs for a month before putting them in the bator. I have built 2 incubators, and have the second one on heat, and ready to go. Thanks.