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 ?
Hammerheads can grow up to 20ft long and usually live in the Caribbean or off West Africa.
Her current work at Hammerhead focuses on VR games and experiences.
In a similar instance in May, a shark wrangler caught a 12-foot hammerhead shark on a Florida beach.
Local fishermen told the researchers that catching scalloped hammerhead sharks by accident is common this time of year.
Hammerhead is the other technological anchor of the new M drivers.
PolyOne Corporation (NYSE: POL), a provider of specialised polymer materials, services and solutions, is launching its Hammerhead Marine Composite Panels at the Composites and Advanced Materials Expo in Orlando.
The smooth hammerhead (Sphyrna zygaena) is distributed from California to Chile within the eastern Pacific Ocean.
Authorized Species Minimum Size Bag Limit (per trip) (fork length) Smoothhound shark None None Atlantic sharpnose shark None 1 per person Bonnethead None 1 per person Hammerheads (great, 78 inches 1 per vessel (Hammerhead or Other shark) scalloped, and smooth) Other sharks 54 inches
With the ability to store two 27" widescreen monitors side by side, the TITAN "Hammerhead's" (IS615427-12) enclosure body is constructed out of 14-gauge welded steel and 12-gauge door thickness, and stands 61" high x 54" wide (bottom portion is 29.5" wide) x 27" deep.
In the southeast and south regions of Brazil, the smooth hammerhead shark is caught near the coast using trawls and gill nets, and offshore in pelagic longline fisheries (Vooren et al., 2005; Amorim et al., 2011).
PIERCING TOOLS Company Model Type Drive Weight Boring (lbs) Diameter Range (in) HammerHead 2.00" AH PP BL SW pneumatic 19 2.00 Trenchless 2.00" RH SR pneumatic 28 2.06 Equipment 2.00" RHPPBL pneumatic 24 2.06 2.00" AH PP BL pneumatic 24 2.00 2.50" CAT PPDF pneumatic 50 2.64 2.50" AH PPDF pneumatic 50 2.64 Company Model Max.
Whale sharks and a species of hammerhead shark are also now endangered.