What is the largest North American bird that builds its nest on the ground?

The California Condor is the largest flying bird in North America. Its wingspan is up to 3 meters, which is the largest wingspan of any North American bird. Its weight is up to 29 pounds, which makes it the heaviest also. Its lifespan is up to 60 years, it is one of the world's longest living birds. For more info on California Condors see the Related Links below.