I found some eggs in a couple different locations than I usually check for eggs... not real sure how old they are. How can I tell if it is worth trying to incubate them. I have about 30 that are going in the bator tomorrow that I know are from yesterday and today. The other ones I found i'm not sure how old those are however most of em are my blue and green eggs and would love to get some more EE chicks. Thanks for any help.