Mallard Duckling

[Metz]

Got loads of muscovy's but none of our muscovy ducklings have ever looked anything like these.

 

[Metz]

Got loads of muscovy's but none of our muscovy ducklings have ever looked anything like these.

 

[Metz]

I don't know about Mule could be, but here is some interesting information and lets see if @Table4Six can give us some info.
https://www.backyardchickens.com/threads/recessive-silver-gene-in-ducks.1292227/

https://www.backyardchickens.com/threads/snowy-mallard-duck-thread.1150497/

 

[Gray Farms]

Got loads of muscovy's but none of our muscovy ducklings have ever looked anything like these.

They aren't pure Muscovy. They are Mules.

 

[Metz]

Three ducklings out of the same batch out of the mallard nest could be silver mallards or snow mallards. Anybody got any opinions from the photos please ?

 

[Gray Farms]

Mule Ducks