How can you tell what a Muscovy Duckling is?

[DuckQuilter]

Hi,
I have 2 ducklings. Both appear to be about the same size, same feet, etc. They were born on the 14th of Feb. Their caruncles are starting to develop.
Today when I came home, one of the other females was acting like she had been mated with, and aside from the ducklings, there are no male ducks, so I am wondering!
Thanks,
Emily

 

[keeperofthehearth]

They're pretty young yet to be breeding. Hmmmm, do you have any pictures? What behavior was the female duck exhibiting?

 

[DuckLady]

Can you post pics?