Tiny duck egg? Who laid it?

[DUCKGIRL89]

I have 3 welsh harlequin hen, & 1 rouen cross hen, in my welsh pen. Al the welsh are laying, nice, large white eggs. So I go to collect them, to find 2 large white eggs, and 1 teeny weeny egg. The rouen cross hen is only 2 and a half months.old, could she have laid it?

Thanks!

PS: the teeny egg is smaller then a quial egg...

 

[Mum]

The teeny egg may well have come from one of your WHQhens. Your Rouen (to the best of my knowledge) isn't at a stage of egg production; yet.

I know well the size of quail eggs, so, I'm thinking: one of your ducks laid (what chicken keepers call) a "fart egg".