Black Swan

 

The Life of Animals | Black Swan | Black swans, primarily black-feathered birds with white feathers. Cygnets (immature birds) are a greyish-brown with pale-edged feathers. Mature Black Swan measures 110-142 cm (43 and 56 inches) in length and weighing 3.7 to 9 kg (8.2 to 20 pounds). The neck is long (relatively long neck swans) and curved in the "S" shape. Black Swan says the musical and far reaching bugle sound, called either on the water or in the air, and a number of soft humming note. When swimming, Black Swans hold their necks arched or erect, and often carry their feathers or wings raised in an aggressive display. Black Swan is unlike any other Australian bird, but can be confused in flight in low light conditions and at great distances from the Magpie goose can. However, Black Swan can be distinguished by a much longer neck and slower wing beat

Before the arrival of the Maori in New Zealand, a subspecies of Black Swan, as the New Zealand Swan became known in the islands, but it was obvious exterminated. In 1864, the Australian Black Swan was introduced to New Zealand as an ornamental waterfowl, and populations are now at large coastal or inland waters, especially in the Rotorua Lakes, Lake Wairarapa and Lake Ellesmere, and the spread of Chatham Islands. Black Swan is almost exclusively herbivorous, and while there are some regional and seasonal changes, diet, usually caused by water and marsh plants dominated. The exact composition varies depending on the water level at high tide, where normal foods are out of reach Black Swans will feed on pasture plants on shore. The Black Swan feeds in the same way in the other swans.

Black Swans are also able to filter feed on the surface, like the other swans, black swan mostly monogamous, mating for life (about 6% divorce rate). Typically, black swans nest in wet winter (February to September), sometimes in large colonies. Black Swan nest much larger heap or mound of reeds, grasses and weeds between 1 and 1.5 meters (3-4 ½ feet) in diameter and up to 1 meter in shallow water or on islands nest again every year, restored or rebuilt as necessary. Both sexes incubate the eggs, with the female incubating at night. If the egg is accidentally roll out of the nest egg of both sexes from the neck (in other swan species only the female performs this feat).

Like all swans Black Swans will actively defend their nests with their wings and beaks. After hatching, the young swans caring parents for about 9 months before the tail. Cygnets may return to their parents for longer trips into deeper water, but Black Swans undertake this behavior less frequently than Mute and Black-necked swans. Black Swan was a literary or artistic image, even before the opening of Cygnus atratus. Black Swan on the flag and the functions of both the state and bird emblem of Western Australia, it also appears in the coat of arms and other iconography of the state institutions.

Find The Life of Animals

Find The Life of Animals

Read More

Swan

 

The Life of Animals | Swan | Swans are the largest members of the family Anatidae waterfowl, and are among the largest flying birds. The largest species, including swans, trumpeter swans and whooper swan, can reach a length of over 1.5 m (60 inches) and weighing over 15 kg (33 pounds). Species in the Northern Hemisphere swan have pure white plumage, but the species are mixed in the southern hemisphere in black and white. The Australian Black Swan (Cygnus atratus) is completely black except for white flight feathers on the wings, chicks black swans are light gray, and the South American Black-necked Swan has a black neck.

The legs of swans usually a dark gray black, with the exception of two species of South America's pink legs. Color varies from bill: the four subarctic species have black bills with varying amounts of yellow, and all others are modeled red and black. Four (or five) species occur in the northern hemisphere, is a species living in Australia and New Zealand and one species is distributed in southern South America. One species, the swan, was introduced in North America, Australia and New Zealand.

The Whooper Swan and Tundra Swan migratory birds as a whole, and trumpeter swans are almost completely migratory.There is some evidence that the black-necked swan is based on a portion of its range, but detailed studies have not known whether these movements are long or short-range migration Swans feed in the water and on land.

The average egg size (the swan) is 113 x 74 mm, weighing 340 g, a clutch size 4 to 7 and an incubation period of 34 to 45 days. Swans are known to aggressively protect their nests. A man was suspected to have drowned in such an attack The swan word comes from Old English swan, akin to the German Schwan and Dutch and Swedish SVAN Swan, in turn derived from Indo-European root * Swen (forthcoming, to sing). Young swans are known as cygnets or swanlings, the Greek κύκνος, Malia and Cygnus Latin word ("Swan") and the suffix-and Old French ("small"). 

Find The Life of Animals

Find The Life of Animals

Read More