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A photo of a Adelie Penguin (Pygoscelis adeliae)
Adelie Penguin

Adelie Penguin

Pygoscelis adeliae

The Adélie penguin (Pygoscelis adeliae) is a mid-sized, robust bird, with adults measuring 70–73 cm in length and weighing between 3.8 to 8.2 kg. Both sexes are similar in appearance, though females are slightly smaller with shorter wings and beaks. These penguins are characterized by their black head, throat, and upper parts, contrasting sharply with their snowy white underparts. A distinctive white ring encircles their black eyes, and their beaks are mostly black with possible reddish-brown markings. Their legs and feet are pinkish, and they possess long, stiff tail feathers that sweep the ground as they walk.

Identification Tips

Adult Adélie penguins have a white eye ring and a black face that extends below the eyes. Their beak is shorter than that of similar species and is mostly covered with feathers. Juveniles resemble adults but have a bluer tinge to their upperparts and white chins and throats. They lack the full white eye ring until at least one year of age.

Habitat

Adélie penguins are exclusive to the Antarctic continent, requiring bare, rocky ground for nesting. They avoid nesting on ice and select locations where wind or sun exposure minimizes snow accumulation.

Distribution

These penguins are found along the entire coast of Antarctica and on various sub-Antarctic islands. They are less common north of the 60th parallel south but have been recorded as far north as Australia, New Zealand, and southern South America.

Behaviour

Adélie penguins are known for their bold and curious nature. They are strong swimmers, typically reaching speeds of around 5 miles per hour, and can leap up to 3 meters out of the water onto rocks or ice.

Breeding

Breeding occurs from October to February. Adélie penguins build stone nests and lay two eggs, which are incubated in shifts by both parents for 32 to 34 days. Chicks join crèches at 22 days old and fledge after 50 to 60 days.

Similar Species

The Adélie penguin can be distinguished from the chinstrap penguin by the absence of the chinstrap marking and its shorter bill with more feathering.

Diet and Feeding

Adélie penguins primarily feed on krill and fish. Their diet has shifted from fish to krill over the last 200 years, likely due to reduced competition from seals and whales.

Conservation status

The Adélie penguin is classified as Least Concern by the IUCN, with a large and increasing population estimated at over 10 million mature individuals. However, populations have declined in the Antarctic Peninsula, attributed to climate change.

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