Wednesday 15 June 2011

Penguins -- Birds that can't fly

penguins

Population: 2.5 million pairs

Location: Antarctic region

Size: About 30 inches tall

Weight: 11 pounds

Diet: Fish, krill, & other small crustaceans

Nests: Circle mounds of small stones

When one thinks of Antarctic wildlife, penguins are often the first animals that come to mind. Indeed these graceful, yet amusing ; hardy yet elegant animals are considered by many to be the signature species of the polar south. That is why we adjudicated to create a separate subdivision dedicated to the many penguin species and their enchanting characteristics .

penguin

Early Antarctic explorers really called up penguins were fish and sorted them accordingly. In fact, as birds, they are marvellously designed for their job , fleeing underwater with great skill . Their compact bodies have a breastbone that causes an excellent keel and they have massive paddle muscles to propel them at speeds up to 25 miles per hour. Their heads retract to create a complete hydrodynamic form. When locomoting speedily, penguins will jump clear of the water every few feet -- an activity called 'porpoising.' This enables them to take a breath, and lessens their chances of being taken by a predator . South polar penguins have besides developed the ability to leap out of the water to a significant height on land, enabling them to promptly reach the base hit of lifted ice edges or stone shelfs. Penguin legs are positioned far down on their bodies , so they walk with a really erect posture . Ashore they are often awkward, toddling and skipping over stones ; on snow they sometimes push themselves along on their stomaches.

Penguins are straight flightless birds. Some species drop equally much as 75 % of their lives at sea, however they all breed on land or sea-ice attached to land. To hold out the harsh conditions of the Antarctic, their bodies are insulated by a thick layer of fatness and a dense network of waterproofed plumage . Penguins' bones are solid and heavy, which help them to stay underwater and cut down the energy required for pursuance diving .


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