It's the male which has the green head. Female birds are less colourful than their male counterparts.
The head.
Mallard
Mallard
The feathers.
Mallard
Yes a Scrub Duck and a Mallard are the same thing.
Ensure the mallard duck gets good nutrition.
A Mallard Duck
A duck .
The only duck I can think of is a cayuga. but it isn't that often that they get a green pigment in their feet.
A mallard is a duck, so is a bird.
No
A female mallard is called a Susie :)