first egg duck eggs chicken eggs!?!?

[bravevline]

I got the first egg today and i guess its possible its a duck but i can't see it's a tiny egg and was found in the duck pen which all the birds which include chickens ducks and geese are maybe a bit over 5 months. it was found in the duck pen which the chickens could had gotten into once i opened this. i still dont know

it was found in a small hole just a few minutes after i opened it for the day i dont think the chickens had time to dig

 

[bravevline]

also she is a cayuga and under average in size to boot. can u post pictures of some of your smaller, lighter cayuga eggs so i can compare?