Hen Mallard ready for a swim. Don’t discount hens they are my guilty pleasure. #waterfowl #henmallard #ducks #duckdecoys #hunter | Mike Marino

One very old hen mallard she has lost all estrogen and has converted to testosterone, hens can change into a male (drake) through a natural process called spontaneous sex reversal, often due to hormonal changes in old age or an injury to one of her ovaries. When the ovary is damaged or stops functioning, her estrogen levels drop, and male characteristics develop, resulting in the hen growing drake-like plumage, such as a green head, white collar, and curled tail feathers. remember the bill never

Mallard Photos and Videos for, All About Birds, Cornell Lab of Ornithology

Mallard | The Wildlife Trusts