help! where did these eggs come from!

[BellLisamo]

Ok so last night i snuck some newbies in with my other rooster and ducks. This morning everyone was happy. The two new ones are bantam cochins.
AND
I found these...

I THINK its a duck egg and then the banties???
How small are bantie eggs!??!?! are they brown?!
Im new...IF they ARE from the banties, (which where else could they come from...) these are the two i snuck in...

Do they look a little young? I guess i could check their vents right?

 

[BellLisamo]

oh i figured it out. it was from my broody, i thought she was coyote bait