Intersex Mallard

I’m told this is an intersex mallard. She grew up female, but then started developing partial male colouring—for example the chocolate-brown chest (overlaid on the regular female pattern), and some green on her head.

   19 March 2022
   Mallard Duck
   ILCE-7M3
   1/500s    f/7.1   274mm   ISO 125
Mallard