Hello! I'm collecting eggs for a hatch next week. They're collected 2x/day. Of the 16 I have so far, 15 look normal/healthy internally (like the "clear" pic). This egg was just collected 8/10, and has dark "meat" already at the wider end. Rotten? Partial development somehow despite being kept at high 60s? It's much darker and dirtier than the others; probably wasn't going to make the final cut. I'm absolutely sure the coop was egg free prior to this. Thanks for any education!