polardetective

See also: Cranes are a family, Gruidae, of large, long-legged and long-necked in the group. There are fifteen species of crane in four genera.

Manufactures industrial products in the hydrocarbon processing, petrochemical, chemical, power generation, unattended payment, automated merchandising. Based in Lake Elsinore, A&A Crane provides affordable crane rental services in Southern California for all of your lifting needs. Manufactures industrial products in the hydrocarbon processing, petrochemical, chemical, power generation, unattended payment, automated merchandising. Based in Lake Elsinore, A&A Crane provides affordable crane rental services in Southern California for all of your lifting needs.

Unlike the similar-looking but unrelated, cranes fly with necks outstretched, not pulled back. Cranes live on all continents except and. They are opportunistic feeders that change their diet according to the season and their own nutrient requirements. They eat a range of items from suitably sized small,,, and to,, and.

Cranes construct platform nests in shallow water, and typically lay two eggs at a time. Both parents help to rear the young, which remain with them until the next breeding season. Some species and populations of cranes over long distances; others do not migrate at all. Cranes are solitary during the breeding season, occurring in pairs, but during the non-breeding season they are gregarious, forming large flocks where their numbers are sufficient. Most species of cranes have been affected by human activities and are at the least classified as threatened, if not critically endangered. The plight of the of North America inspired some of the first legislation to protect. The bare area of skin on the face of a.

This can change colour or even expand in area when the bird is excited The cranes are large to very large birds, including the world's tallest flying bird. They range in size from the, which measures 90 cm (35 in) in length, to the, which can be up to 176 cm (69 in), although the heaviest is the, which can weigh 12 kg (26 lb) prior to migrating. They are long-legged and long-necked birds with streamlined bodies and large rounded wings. Internet Manager For Registration here.

The males and females do not vary in external appearance, but on average males tend to be slightly larger than females. The of the cranes varies by habitat.

Species inhabiting vast open wetlands tend to have more white in the plumage than do species that inhabit smaller wetlands or forested habitats, which tend to be more grey. These white species are also generally larger. The smaller size and colour of the forest species is thought to help them maintain a less conspicuous profile while nesting; two of these species (the and ) also daub their feathers with mud to further hide while nesting.

The long coiled that produces the trumpeting calls of cranes (, Antigone antigone) Most species of crane have some areas of bare skin on the face; the only two exceptions are the and demoiselle cranes. This skin is used in communication with other cranes, and can be expanded by contracting and relaxing muscles, and change the intensity of colour. Feathers on the head can be moved and erected in the blue, wattled and demoiselle cranes for signalling as well. Also important to communication is the position and length of the. In the two crowned-cranes the trachea is shorter and only slightly impressed upon the bone of the, whereas the trachea of the other species is longer and penetrates the sternum. In some species the entire sternum is fused to the bony plates of the trachea, and this helps amplify the crane's, allowing them to carry for several kilometres. Distribution and habitat.