![A grey duck/pārera and a mallard on water's edge Tauranga, NZ.](http://static.sciencelearn.org.nz/images/images/000/002/954/full/SLH_Who's_who_in_the_duck_world_GreyDuck.jpg?1674169255)
The grey duck/pārera (Anas superciliosa superciliosa) and the mallard are hard to distinguish. They are both pictured here, showing the grey duck with a green speculum and the mallard with a blue one.
The grey duck/pārera (Anas superciliosa superciliosa) and the mallard are hard to distinguish. They are both pictured here, showing the grey duck with a green speculum and the mallard with a blue one.