Meat Eating Ducks

It is well over 60 years since my Father took me Wildfowling on the River Wire and Pilling/Glasson sands.  I never knew until now that some Ducks will eat meat.  The pictures I took show Mallard and Goosanders  taking meat just put out at a Kite feeding Station.   It seems this happens daily - as soon as the meat is out they leave the Lake.  They are by the way completely wild birds and I now shoot with a Camera