I got some Guinea eggs from a friend to put in my incubator (which was already incubating a goose egg, lol) and he told my husband the eggs weren't all the same age. I got 6, and this one surprised me, it seems really far along?! I need to know how old it is, how long I have left, and any other tips you have, the other 5 are still on the "freshly laid" side! Thank you so much!!