The hammerkop, also known as the hammerhead (Dutch translation), hammerhead stork, or anvilhead, is a medium-sized bird with a long shaggy crest. The shape of its head with a curved bill and crest at the back is reminiscent of a hammer, hence its name. Its plumage is a drab brown all over.

The hammerkop builds a huge haystack-like stick nest nearly 2 m across in a tree fork, and lays 3 to 6 eggs. The nest is reused each year, getting larger and larger as the hammerkop renovates it. The entrance to the nest remains at the bottom, to deter potential predators.

Length: : 20 inches