I have a couple of broody hens. We chased her off and took the eggs for a few weeks. After a few weeks of her not giving up, I did! I decided to let her hatch a few chicks. It has been about 2.5-3 weeks and I'm noticing a foul smell. I'm not sure if the eggs she is sitting on are starting to rot, or if it is some eggs on the floor of the hen house. Since she & another broody are hogging 2/6 nest boxes some other hens are using the floor! Or the new pullets are still learning where to lay! I'm also not sure if the smell is from the eggs, or just the high temps causing the coop to smell. (I thought we removed all the eggs from the hen house, but it is possible one was hidden.) I did find one cracked egg under her yesterday that had been fertilized, but not fully developed. I'm not sure if she cracked it or another bird. Is there a way I can check to see if the eggs are 'good'? Assuming they are good, how long does it typically take for them to hatch? Or, more importantly, how long do I let her sit before I should assume they are bad and toss them?