The heavy-footed moa (Pachyornis elephantopus) is a species of moa from the family Dinornithidae. This moa was widespread on the South Island only, and its habitat was the lowlands (shrublands, dunelands, grasslands, and forests). It was a ratite and a member of the order Struthioniformes. The Struthioniformes are flightless birds with a sternum without a keel. They also have a distinctive palate.