This is my first time getting eggs in the mail. They were laid on the day they were shipped, will spend 2 days in Priority Mail, then need a 12-24 hour "rest" period (or so I have read) before going in the incubator. So, do I start my 21 day count on the day they go in the incubator? This is what I think, since I have read that you can start incubating your eggs up to 10 days after they've been laid, as long as you keep them in a relatively warm spot. Any advice, tips, comments since this is my first time! I just built a styrofoam cooler incubator today, I have it up and running and it is doing okay, just running a littler hotter than I would like. A few more holes for ventilation may be necessary but will leave it up and running to tweak it and make sure it is just right by the time the eggs are ready to go in! I am really hoping for feedback so I know I am doing this right! I had two bad goes with local farm eggs. Teeny (3 eggs first time, 4 the second time) incubator, bad seal on the cover, no chicks! This time I have a better incubator (it is a step up anyway), more eggs, and, hopefully, a better shot! I can use any expertise out there! I want to make this work!!!