---
title: "Adélie Penguin (Pygoscelis adeliae) | AnimalTracks.wiki"
description: "The pebble-stealing penguin that fasts for weeks on end and steers across featureless ice by the sun."
image: "https://animaltracks.wiki/images/animals/adelie-penguin-1.webp"
published: "2026-09-05"
updated: "2026-09-17"
---
# Adélie Penguin (*Pygoscelis adeliae*)
> **Status**: Checked against 9 sources, listed under Sources below.
> **Tagline**: The pebble-stealing penguin that fasts for weeks on end and steers across featureless ice by the sun.
> **Soundtrack Vibe**: Classic Punk & 70s Garage // The Hives, "Hate To Say I Told You So"
> **Soundtrack Links**: [Spotify](https://open.spotify.com/track/20j7B6mL9gnNvG3ic6Vwh5) | [YouTube](https://www.youtube.com/watch?v=FahA3C8Xpqo)
> **Vibe Match**: Raw garage swagger, crisp staccato riffs, and punchy attitude, for a penguin that porpoises out of the water to grab a breath and steals rocks from other penguins to build its nest.
## Biological Superpowers & Stats
- **Taxonomy**: *Pygoscelis adeliae*
- **Danger Level**: Low
- **Conservation Status**: Least Concern ([IUCN Red List](https://doi.org/10.2305/iucn.uk.2020-3.rlts.t22697758a157660553.en))
- **Superpower**: Steers by the sun across featureless ice, and some can dive to depths of up to 175 meters.
- **Habitat**: Antarctic coasts and offshore islands, nesting on bare, ice-free rock
- **Diet**: Antarctic krill, fish such as Antarctic silverfish, and amphipods
- **Tags**: bird, antarctic, penguin, polar-icon
## Natural History & Behavior
## The Tuxedo on the Rocks
At 70 cm tall and 3 to 6 kg, the **Adélie Penguin** (*Pygoscelis adeliae*) is a medium-sized penguin and a very determined long-distance walker. It is one of only 5 penguin species that live on the Antarctic continent, and it breeds around the entire coast and its small islands, wherever there is exposed rock. A drone and ground survey published in 2018 counted 751,527 breeding pairs on the Danger Islands alone, more than the rest of the Antarctic Peninsula region combined, including what were then the third and fourth largest Adélie colonies in the world. Adults arrive at their colonies in October and fast for 3 to 4 weeks while they claim territory, court and build nests. Once the eggs are laid, females feed at sea while males fast for another 10 to 16 days through the first incubation shift. Adélies have a life expectancy of 10 to 20 years.
## Waddle, Toboggan, Swim
On the ice an Adélie walks at an average 2.5 km/h, or, when there is enough snow, flops onto its belly and toboggans. In the water it swims at 4 to 8 km/h and can porpoise, shooting out to skim above the surface and grabbing a quick breath while it is out of the water. Some Adélies can dive to depths of up to 175 metres, though they usually feed in the top 70 metres. In droppings collected across the Antarctic Peninsula and Scotia Sea, Antarctic krill turned up in 85% of Adélie samples, and fish and amphipods are part of the diet too. Parents feeding chicks swim 5 to 120 km offshore on trips lasting 5 to 72 hours, and tracking shows these penguins can swim more than 1,200 km from their breeding site. Leopard seals are their main predators, and in a six-year study most of the seals' hunting took place near the beach. Ashore, a penguin is safe from them, because leopard seals only come ashore to sleep or rest.
> **The Pebble Economy** Adélies build their nests from pebbles on sloping ground, so meltwater runs away from the nest. A researcher who followed 450 nests in camera photos said stealing rocks from other penguins is "a major thing that they do." The more rocks a nest held, the better the chance of one or more chicks surviving.
## A Sun Compass, and One Bird Far Inland
In a study published in 1964, male Adélies carried from coastal colonies to featureless ice plateaus inland set off in straight lines when conditions were good. Birds from the same colony held the same heading wherever they were released, even when it did not point home. The researchers concluded that the penguins steer by the sun, using a biological clock to allow for its changing position, and that this could guide lost birds toward feeding areas off the coast.
Sometimes things still go wrong, and a penguin may become disoriented. On 5 January 2026, an Adélie was seen near Troll Research Station in Dronning Maud Land, 200 km from the nearest open sea and about 1,300 km from the closest breeding colony. It appeared to be in good condition, stayed among the station buildings until 3 pm, then walked east and disappeared. The scientists who reported it know of only one comparable peer-reviewed record: Adélie tracks found 300 km from the coast in 1958.
## Frequently Asked Questions
### Why are pebbles so valuable to Adélie penguins?
Adélies build their nests out of pebbles on sloping ground, so that meltwater runs away from the nest, and the higher a nest sits off the ground, the more likely it is to stay clear of snow and moisture. In a camera study of 450 nests, the more rocks a nest held, the better the chance of one or more chicks surviving. The researcher also said that stealing rocks from other penguins is a major thing that they do. *(Source: [Australian Antarctic Division, Australian Government]())*
### How do Adélie penguins navigate across featureless sea ice?
With the sun. In a study published in 1964, male Adélies carried from coastal colonies to featureless ice plateaus inland moved in straight lines, and birds from the same colony held the same heading wherever they were released. The researchers concluded that the birds use the sun as their main cue, with a biological clock to allow for the sun's changing position. *(Source: [Emlen & Penney 1964]())*
### Does living in a big colony protect Adélie penguins from leopard seals?
It appears to. In a six-year study, leopard seals were present persistently only when more than about 250 penguins an hour passed through the area near the beach, and predation rates varied with that traffic in a curve that levelled off above about 1,200 penguins an hour. At large colonies, so many penguins come and go that they swamp the seals' efforts, which reduces each bird's chance of being taken, and small colonies are of little interest to the seals. So, as far as predation goes, it appears to pay to nest in a very small or a very large colony. *(Source: [Ainley et al. 2005]())*
## Sources
1. [Adélie penguin. Australian Antarctic Division, Australian Government.]()
2. [Pygoscelis adeliae (Adelie penguin). Animal Diversity Web, University of Michigan.]()
3. [Borowicz et al. (2018). Multi-modal survey of Adélie penguin mega-colonies reveals the Danger Islands as a seabird hotspot. Scientific Reports.]()
4. [Fragão et al. (2021). Microplastics and other anthropogenic particles in Antarctica: Using penguins as biological samplers. Science of The Total Environment.]()
5. [Emlen & Penney (1964). Distance navigation in the Adelie penguin. Ibis.]()
6. [Chappell, Morgan & Bucher (1990). Weather, microclimate, and energy costs of thermoregulation for breeding Adélie Penguins. Oecologia.]()
7. [Descamps, Cristea & Aspnes (2026). An Adélie penguin (Pygoscelis adeliae) 200 km from the sea. Polar Research.]()
8. [Ainley et al. (2005). Leopard seal predation rates at penguin colonies of different size. Antarctic Science.]()
9. [Pygoscelis adeliae. The IUCN Red List of Threatened Species 2020: e.T22697758A157660553.]()
*Published September 5, 2026. Last updated September 17, 2026.*
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