Who’s egg is this?

[macmac955]

Okay so I have 4 buff Orpingtons, 2 have combs and are laying. The other 2 don’t even have growing combs yet. I have 1 Easter egger that lays green eggs and she’s quarantined by herself right now. I have 1 female Guinea fowl and she’s 14 weeks old.

I found this super tiny brown egg and I was suspicious that it was the Guinea fowl. When I look it up though it says they start laying once they’re like a year old. I need help with this one because I’m so confused lol.
(Egg compared to my Orpingtons for reference. Sus egg on the left)

 

[Debbie292d]

When chickens lay their first few eggs, some can end up being a bit strange. Some smaller than that they call fairy eggs. I've seen them without shells on them. It usually straightens itself out in a couple of days though.