Animals World: Penguins

Showing posts with label Penguins. Show all posts

Tuesday, May 4, 2010

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Rockhopper Penguins are up to 22 inches (55 cm) tall and weigh about 6 pounds (3 kg). They have a droopy, feathery crest (black and yellow), a bright orange-red bill, and bright red eyes. Males and females are very similar in appearance. Like all penguins, they have a big head, a short, thick neck, a streamlined shape, a short, wedge-shaped tail, and tiny, flipper-like wings. Their webbed feet are used for swimming. Penguins are countershaded; they have a lighter color on the belly and a darker color on their back; this coloration helps camouflage them when they are in the water, hiding them from predators.
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Sunday, March 28, 2010

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The Macaroni Penguin is a large, crested penguin, similar in appearance to other members of the genus Eudyptes. An adult bird has an average length of around 70 cm (28 in);the weight varies markedly depending on time of year and sex. Males average from 3.3 kg (7 lb) after incubating, or 3.7 kg (8 lb) post-moult to 6.4 kg (14 lb) pre-moult, while females average 3.2 kg (7 lb) post-moult to 5.7 kg (13 lb) pre-moult.The head, chin, throat and upperparts are black and sharply demarcated against the white underparts. The black plumage has a bluish sheen when new and brownish when old. The most striking feature is the yellow crest that arises from a patch on the centre of the forehead, and extends horizontally backwards to the nape. The flippers are blue-black on the upper surface with a white trailing edge, and mainly white underneath with a black tip and leading edge. The large bulbous bill is orange-brown. The iris is red and there is a patch of pinkish bare skin from the base of the bill to the eye. The legs and feet are pink. The male and female are similar in appearance, although males tend to be slightly larger.Males also bear relatively larger bills, which average around 6.1 cm (2.4 in) compared to 5.4 cm (2.1 in) in females; this feature has been used to tell the sexes apart.
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Sunday, February 21, 2010

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Males have a maximum weight of about 8.5 kg (19 lb) just before moulting, and a minimum weight of about 4.9 kg (10.8 lb) just before mating. For females the maximum weight is 8.2 kg (18 lb) just before moulting, but their weight drops to as little as 4.5 kg (10 lb) when guarding the chicks in the nest. Birds from the north are on average 700 g (1.5 lb) heavier and 10 cm (4 in) taller than southern birds gentoo penguin reaches 75-80 cm. They are the fastest underwater swimming penguins, reaching speeds of 36 km/h[citation needed]. Gentoo are built for very harsh cold climates.
Nests are usually made from a roughly circular pile of stones and can be quite large, 20 cm high and 25 cm in diameter.Two eggs are laid, both weighing around 500 g. The parents share incubation, changing duty daily. The eggs hatch after 34 to 36 days. The chicks remain in the nests for about 30 days before forming creches. The chicks molt into sub-adult plumage and go out to sea at about 80 to 100 days.
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