You can do a float test. See this page https://www.backyardchickens.com/t/256486/testing-an-egg-for-freshnessYou were right. I just found my Speckled Sussexs stash of about 20 eggs under a bush. She's in there right now laying one. Is there a way to tell if eggs are fresh or not? Thanks!
I know that they say to keep eggs out of water, and not to wash them, etc., but sometimes you have to be practical! Glad you found the stash! Good luck!