I'm wondering if there's anything I can do. We had barnyard mix eggs given to our orpington. Two hatched yesterday and two more by this morning (day 21). Mama has now taken her 4 babies outside and left the two remaining eggs. There's no cracks or pips and I can't hear anything from them, but theres also no smell. Both eggs are dark brown and hard to candle, but I can see a shadow and an air sack. Just not sure what to do with them, I also do not have an incubator