Can my mallard incubate a call duck egg

[A boy with ducks]

So if i were to buy a fertile call duck egg will my mallard incubate it google isnt being much help and what age will my mallard have to be

 

[Miss Lydia]

If your Mallard goes broody it will brood a call egg or any other duck egg

 

[A boy with ducks]

If your Mallard goes broody it will brood a call egg or any other duck egg

Ok thanks

 

[ThePhoebeFive]

If your Mallard goes broody it will brood a call egg or any other duck egg

Probably even a chicken egg. At least, if ducks are anything like chickens in that regard.