We've eaten eggs from nests that may have been there a week or two -- the water floating test is the best way we've found. Or when you go to use them, just break them into a separate bowl.
Also, on a related note -- we don't even refrigerate our eggs. A woman who used to work on a ship's galley said she would hunt for eggs that hadn't been washed or refrigerated, because they kept for months at sea. So we decided to try storing our eggs in a basement food closet (temp ranges from 50-70 degrees). Sure enough, we've eaten eggs that were perfectly good after more than two months (we still floated AND broke them into separate bowls, just to be sure!).
Good luck
Also, on a related note -- we don't even refrigerate our eggs. A woman who used to work on a ship's galley said she would hunt for eggs that hadn't been washed or refrigerated, because they kept for months at sea. So we decided to try storing our eggs in a basement food closet (temp ranges from 50-70 degrees). Sure enough, we've eaten eggs that were perfectly good after more than two months (we still floated AND broke them into separate bowls, just to be sure!).
Good luck
