hammerhead

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hammerhead,

common name for a heavy-looking, heronlike bird, Scopus umbretta. Its plumage is brown with light and dark glossy, purplish streaks on the wings and body. It has short legs, partially webbed feet, and a heavy, wide, moderately long, black bill. Its stiff, backward-pointing crest, along with its peculiar bill, give its head a hammer-shaped appearance. Both sexes are similarly arrayed. Long-winged and long-tailed, the hammerhead, or hammerkop (as it is called in Africa), may reach a body length of 20 in. (51 cm). It is an inhabitant of the marshes and mangrove swamps of southern Arabia, Africa, and Madagascar, where it feeds primarily on aquatic animals, such as water insects, small fish, and amphibians. It often perches on the back of hippopotamuses, searching for frogs. Hammerheads reside singly, in pairs, or in small flocks, near water and seldom far from trees, in the forks of which they build intricate domed nests, some 3 to 6 ft (91.5–183 cm) or more in diameter. The nests, to which the birds return each year, are complex, three-compartmented structures, lined with mud and dung, and ornamented outside with bright-colored objects. The female lays a clutch of three to six white eggs. Both sexes care for the highly dependent young. According to native superstitions, hammerheads are evil omens, and it is considered bad luck to harm them. Such superstitions have kept the birds somewhat protected. Hammerheads are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Ciconiiformes, family Scopidae.

hammerhead

[′ham·ər‚hed]
(design engineering)
The striking part of a hammer.

hammerhead

1. any shark of the genus Sphyrna and family Sphyrnidae, having a flattened hammer-shaped head
2. a heavily built tropical African wading bird, Scopus umbretta, related to the herons, having a dark plumage and a long backward-pointing crest: family Scopidae, order Ciconiiformes
3. a large African fruit bat, Hypsignathus monstrosus, with a large square head and hammer-shaped muzzle
References in periodicals archive ?
The most usual versions are the clamping head and the hammer head (figure 4).
The RoboHammer also features a two-piece, injection molded plug, which is inserted into the hammer head as part of the tool's dead-blow system.
Two winds, or complete revolutions of the hammer head, are usually made before the turns.
A lethal hammer head suspended from a strap was found under some clothing in David Norris's bedroom.
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Now, almost 40 years later, Hammer Head whisky is earning rave reviews from leading experts on the water of life.
He ordered to install water plant in Hammer Head area of Gwadar.
This equipment included ropes and a rope with a hammer head attached which the procurator fiscal John Bamber claimed could be used for throwing over branches so that Kinsley could scale trees and reach nests.
West Ham's goalscorer Defoe is congratulated by Hutchison and Di Canio; HAMMER HEAD.
Tenders are invited for Sledge Hammer Head Only Weight 3600 Gms.
Attendees can also do their own star-gazing on any of the beautifully situated terraces as they sip specialty SharkPro Hammer head cocktail and dine on an array of mouth-watering gourmet fare.
If you do find the post is half way in and tilting, try putting the sledge hammer head into the metal box on top of the spike and twisting it around with the handle.