How long is it safe to keep an egg after it is laid, n not found? I found a nest of 14 eggs this morning in a cardboard box in the hay bales. I've seen some chickens wandering around on the bales n I've been on the look out for eggs. There was a box there that they were milling around so I put hay in it, but no eggs. I have a box set just off side of the bales that I throw the string in from the bales when I cut them open; this morning I saw a chicken lounging in there so I checked - n to my surprise, 14 eggs!!! I don't think they r too older, maybe a few days, n weathers been cool. How long can I safety keep them?