CLOSED: ID for Cormorant.

Have a Cormerant , I need to know which one, I played with the picture and see a bit of red on the face. The one I see in the book has yellow and it's crested. Either a Great Cormorant or Double crested??? My guess the Great Cormorant.

And Id for Ducks.
Female Mallard or American Black Duck?

And these?

And here another one of them.

Double-crested; the bill is too slender for Great. Probably an immature (1-2 years old), only adults have the crest.

The ducks look more like Mallards, but could be hybrids.

Resin