In four years of observing these two "manky" mallards, or wild domestic ducks, I've never seen them apart. They swim together, eat together, chase the smaller wild mallards together, and sleep just a few feet apart, in the same position. The love between Brownie and Greenie is so powerful it draws onlookers who don't even know their backstory, who glimpse them for the first time as they walk through Toronto's High Park.
Sam has a hookbill, but that hasn't stopped him from being a feisty duck. I have noticed however that he does have problems finding a lady friend come spring time. Poor Sam! You'll note that the top photo shows him molting, i.e. he can't fly during this period when his green head feathers change over to brown for the summer months.
I don't know how Greenie ended up in a large urban park when clearly he's a farm duck. Nevertheless, along with Brownie he's lived here a long time, and it's his home. I am honoured to be his human friend.