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Chinstrap penguin. Penguins are birds in the family Spheniscidae in the monotypic order Sphenisciformes. [1] They inhabit high-productivity marine habitats, almost exclusively in the Southern Hemisphere; the only species to occur north of the Equator is the Galapagos penguin.
Support for this etymology can be found in the alternative Germanic word for penguin, fettgans or 'fat-goose', and the related Dutch word vetgans. Adult male penguins are sometimes called cocks, females sometimes called hens; a group of penguins on land is a waddle, and a group of penguins in the water is a raft.
A variety of methods are used for counting penguins, and April 2012 saw their first census from space, when imagery from Ikonos, QuickBird-2, and WorldView-2 satellites were used to count Antarctican emperors. [3] This is a similar technique to that used by the UNHCR to count humans in Somalia. [4]
The Penguin Watch project needs citizens to count penguins in photos from Antarctica, so researchers can better understand the creature's lives and environment. Cozy up on the couch and do your ...
Magellanic penguins feed in the water, preying on small pelagic fish, hagfish, [5] cuttlefish, squid, krill, and other crustaceans, and ingest sea water with their prey. Their salt-excreting gland rids the salt from their bodies. Adult penguins can regularly dive to depths of 20 to 50 m (66 to 164 ft) deep in order to forage for prey.
King penguins mainly eat lanternfish, squid, and krill. On foraging trips, king penguins repeatedly dive to over 100 metres (300 ft), and have been recorded at depths greater than 300 metres (1,000 ft). [2] Predators of the king penguin include giant petrels, skuas, the snowy sheathbill, the leopard seal, and the orca.
Chinstrap penguins are generally considered to be the most aggressive and ill-tempered species of penguin. [8] Chinstrap penguins microsleep over 10,000 times a day and accomplish this in 4 second bouts of sleep. The sleep can be both bihemispheric and unihemispheric slow-wave sleep. The penguins accumulate over 11 hours of sleep for each ...
Gentoo penguins can reach a length of 70 to 90 cm (28 to 35 in), [19] [20] making them the third-largest species of penguin after the emperor penguin and the king penguin. Males have a maximum weight around 8.5 kg (19 lb) just before moulting and a minimum weight of about 4.9 kg (11 lb) just before mating.
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