Hi all... I'm still trying to make my broody hen happy. We candled her eggs last weekend, though we're not sure what we're looking at, and not sure if any of them are actually viable. She's a young hen, and so are the other hens the eggs came from. There is a backyard breeder down the street who has eggs that may hatch by this weekend. Is it a good idea to substitute viable eggs for these mystery eggs? I just hate to see her commit more time to these eggs and end up with a broken heart if they don't hatch. Should I be concerned about disease at all? If so... is it safer to buy them as eggs, or after they hatch? Is there risk of bringing in disease if they're still eggs? If they're already hatched, any tips for sticking them under her? Opinions?