The extinct New Zealand eagle with a wingspan of up to about 3 meters that preyed on moa was Haast's eagle.
Haast's eagle (Hieraaetus moorei) lived on New Zealand's South Island and is widely identified with the pouākai, a giant bird of Māori tradition. It was the largest eagle known to have existed, with estimated weights of about 10 to 18 kilograms—substantially heavier than any living eagle.
Its extraordinary size evolved in an environment lacking terrestrial mammalian predators but containing enormous flightless birds. Large moa could weigh up to 200 kilograms, as much as fifteen times the eagle's body weight. Powerful legs, talons, and a massive bill allowed Haast's eagle to attack and tear into prey far larger than itself.
The eagle's bill and feeding anatomy have led scientists to compare some of its behavior with condors as well as eagles. After humans arrived, moa were hunted and forests were burned, removing the eagle's primary food source. Haast's eagle probably disappeared around 1445, soon after the extinction of the large moa species.