Its our first try at hatching. A hen went broody so we got 3 (fertile) eggs from a neighbor. About the(fertile) eggs,,,, I have never met the neighbors before,they live about a half mile away.Stopped in and asked if they had fertile eggs,,and she said "yes". She was very nice and we went out to the coop and she grabbed 3 eggs out of the nesting box. I took these eggs home and put them under my hen. That was 2 days ago,,hen has been doing very well with them. Im wondering when should I candle these eggs to see how they are doing? I read the sticky post on this so I think I know what to look for,,, but Im not sure when to do it.