If he can not command the attention of a peahen, he will not bequeath any little peafowl to the next generation. (discovermagazine.com)
It very difficult to tell a male and female goose or guineafowl apart by their visual characteristics but the differences are obvious with peafowl. (sciencedaily.com)
The researchers studied a 90 million year old group of birds called the Galloanserae which including the mallard duck, swan goose, wild turkey, helmeted guineafowl, Indian peafowl and common pheasant. (sciencedaily.com)