Description
Its plumage is a drab brown with purple iridescence on the back (the subspecies S. u. minor is darker). The bill is long, flat, and slightly hooked. The neck and legs are shorter than those of most of the Ciconiiformes. The Hamerkop has partially webbed feet, for unknown reasons. It middle toe is comb-like (pectinated) like a heron's. Its tail is short and its wings are big, wide, and round-tipped; it soars well. When it does so, it stretches its neck forward like a stork or ibis, but when it flaps, it coils its neck back something like a heron.
Vocalisations include cackles and a shrill call given in flight. Hamerkops are mostly silent except when in groups.
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