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--- penguins [2021/08/10 04:31]
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+++ penguins [2022/05/24 08:21] (current)
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 Penguins are not able to bite the food, so they occasionally swallow a stone, which is transported to the stomach and crushed there. Such nutrition does not harm them. On the contrary, stones make the digestion process go faster, and with the extra weight in the stomach, they are able to dive much deeper. [([[https://www.smithsonianmag.com/science-nature/14-fun-facts-about-penguins-41774295|Smithsonian]])]
-{{tag>fauna nature birds}}
+==== Sixteenth century ====
+The penguin was first described in the sixteenth century when it was thought to be a rather strange goose. [([[https://www.penguins-world.com/penguins-in-history/|Penguins World]])]
+==== Short tail ====
+The short tail is an important part of the penguin's body because it acts as a rudder in the water. [([[https://seaworld.org/animals/all-about/penguins/physical-characteristics/|SeaWorld]])]
+==== Little blue penguin ====
+The smallest species in the penguin family is the Little Blue penguin. These babies are about 40 centimeters tall and weigh about 1.1 kilograms. [([[https://www.aquariumofpacific.org/onlinelearningcenter/species/little_blue_penguin|Aquarium of Pacific]])]
+==== Safekeeping eggs ====
+The eggs laid by penguins are kept under a thick layer of fat on their abdomens. [([[https://www.wwf.org.au/phillip-island/penguins|WWF]])]
+==== Huddling ====
+Penguins may huddle together for several reasons. This behavior helps these birds protect themselves from predators. In cold habitats, cuddling helps keep them warm. [([[https://eos.org/articles/emperor-penguins-huddles-change-in-response-to-weather|American Geophysical Union]])]
+==== Penguins and polar bears don't live together ====
+Unlike many popular cartoons, you will never see penguins and polar bears together in the wild. That's because penguins live south of the equator and polar bears live north of the equator. [([[https://www.nationalgeographic.com/animals/article/arctic-antarctica-wildlife-myths-explained|National Geographic]])]
+==== Ticklish ====
+Penguins, like humans, are ticklish and react to them as humans do. [([[http://www.researchhistory.org/2011/04/22/are-penguins-ticklish/|Research History]])]
+==== Emperor penguin ====
+The largest species is the emperor penguin, which can reach up to 40 in. [([[https://www.mappr.co/interesting-animal-emperor-penguin/|Mappr]])]
+==== Plumage loses ====
+Each year the penguin loses its plumage, which grows back after a few weeks. [([[https://www.visitsealife.com/london/information/news/penguin-moulting-season-arrives/|Visit SeaLife]])]
+==== Tobogganing ====
+To save their energy, penguins toboggan, and that means sliding on their stomachs instead of walking. [([[https://www.thespruce.com/glossary-definition-of-tobogganing-385398|The Spruce]])]
+==== Penguin's tongue ====
+The penguin's tongue is imbued with small spines that make it much easier for it to hold onto the fish it catches. [([[https://archive.nerdist.com/world-penguin-day-reminder-penguin-mouths-are-nightmare-pits/|Nerdist]])]
+{{tag>fauna nature birds science}}

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