The hamerkop - Scopus umbretta

The Hamerkop, also known as Hammerkop, Hammerkopf, Hammerhead, Hammerhead Stork, Umbrette, Umber Bird, Tufted Umber, or Anvilhead, is a medium-sized wading bird. The shape of its head with a curved bill and crest at the back is reminiscent of a hammer, hence its name.