Hey Barry.If i want to swap eggs under pigeons to get them to raise the babies how close laying wise do they need to be. Will tthey kow if the are setting 21 days or does it need to be 17 on the money. thanx
I used to breed japanese quails and kept eggs for very long. Basically, eggs lose 2% fertility per day until a week, then it drops much faster, after 2 weeks they are usable but close to duds. Keep in a cool place as if it gets warm, they will start to develop (without success).Agree, I read in some thread that an egg can be held upto 6 days from hatch day for switching, any later than that may not result in embriyo development and also do not refrigerate the eggs.