Hamerkop
A water bird known for its hammer-shaped head and large nests.
The hamerkop (Scopus umbretta), also called the umbrette, is a medium-sized water bird with brown plumage found in mainland Africa, Madagascar, and Arabia. It is the only living species in the genus Scopus and the family Scopidae, and its closest relatives are thought to be pelicans and the shoebill. The species is renowned for its enormous nests, which include an internal nesting chamber, and is assessed by the IUCN as being of least concern.
- Scientific name
- Scopus umbretta
- Family
- Scopidae
- Order
- Pelecaniformes
- Average height
- 56 cm (22 in)
- Conservation status
- Least concern (IUCN)
- Subspecies
- Two recognized (S. u. umbretta, S. u. minor)
Lore & Background
The hamerkop is a sedentary bird that often shows local movements. It hunts in shallow water by sight or touch, feeding mostly on fish and amphibians, but is adaptable and will take any prey it can. Unusually for a wading bird, it builds nests with an internal nesting chamber where eggs are laid. Both parents incubate the eggs and raise the chicks. The species is not globally threatened and is locally abundant in mainland Africa and Madagascar.
Reader's Guide
The hamerkop holds significance in ornithology as the sole living member of its genus and family, with a taxonomic history that reflects long-standing mystery. Long considered part of the Ciconiiformes, it is now placed with the Pelecaniformes, with its closest relatives thought to be pelicans and the shoebill. Its distinctive head shape, which gives it the Afrikaans name 'hammerhead,' and its enormous, chambered nests make it notable among water birds. The species is adaptable, feeding on a wide range of prey and tolerating human presence, and is assessed as least concern by the IUCN.
Did You Know?
- The hamerkop's name comes from the Afrikaans word for hammerhead, referring to the shape of its head with a long bill and crest at the back.
- It builds enormous nests with an internal nesting chamber, which is unusual for a wading bird.
- The species is the only living member of the genus Scopus and the family Scopidae.
- One extinct species, Scopus xenopus, is known from Pliocene deposits in South Africa and was slightly larger than the hamerkop.
Frequently Asked Questions
What makes the Hamerkop's head unique?
The bird is named for the prominent crest on its head that, when seen in profile, looks strikingly like a hammer. This feature is its most recognizable trait and immediately distinguishes it from other water birds in its range.
Where do Hamerkops live?
You can find them across mainland Africa, the island of Madagascar, and parts of Arabia, usually near wetlands or other water bodies. They are the sole surviving member of the genus Scopus and the family Scopidae.
What are the Hamerkop's closest relatives?
Researchers consider pelicans and the shoebill to be its nearest living kin, placing the species in the order Pelecaniformes. Despite that connection, the Hamerkop stands alone as the only extant species in its own family.
What is special about Hamerkop nests?
The species is famous for constructing extraordinarily large nests that include a dedicated internal chamber where the young are raised. These impressive structures are one of the bird's most celebrated traits, and the IUCN currently rates the species as least concern.
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