Mallard x Muscovy hybrid ducks

Muscovy-Mallard hydrid duck
Muscovy-Mallard hydrid
Muscovy-Mallard hydrid
Muscovy-Mallard hydrids.
Muscovy-Mallard hydrid duck
Muscovy-Mallard Hybrid duck
Hybrid duck
This duck lives in a closed private garden with 3 lakes; its duck companions were several Muscovies, one large Silver Appleyard (Mallard domestic descendant) and one small Spot-billed Duck.
Hybrid duck In the same garden, although these 2 were constant companions, could the crested mallard-descendant be the parent of the large duck above with one of the ubiquitous Muscovies?
Hybrid duck This very similar-looking duck with large clawed "Muscovy" feet lives a couple of miles away in another closed garden with several domestic ducks, mainly Appleyards, and a couple of Muscovies. It may have the same parentage?
Hybrid Mallard-Muscovy duck Lives with Muscovies. More upright stance than Muscovy with thinner, redder legs.
Hybrid duck
Hybrid duck
Hybrid duck
This duck appeared last year in the same garden as the first one above. It appears to have Mallard-descendant parentage through the white neck-ring, has a similar bill to the first duck and large clawed feet.