- Jun 15, 2008
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I've collected eggs that were left to sit in the coop for days while I was out of town. I've never cracked an egg with a chick, veins, etc... I wouldn't leave them in warmer weather but unless a hen is sitting on the eggs, they've been in an incubator, or it's been well above 90F even at night you aren't going to find anything in there that wouldn't be in the egg whether it was fertile or not. Even then if you crack an egg that's been in the bator 1 day you may not notice.