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Adélie Penguin
Penguins · Short-distance migrant

Adélie Penguin

Black-throated Penguin, Adelie Penguin · Pygoscelis adeliae

Least Concern70–71 cm · 3000–6000 g

By the Birdfact teamChecked byNathan Cope

Standing just 70 cm tall and dressed in a crisp tuxedo-like coat, this charismatic Antarctic penguin can swim up to 185 kilometres a day while hunting for krill.
On this page12 sections
  1. How to recognise it
  2. Its size
  3. Its song and calls
  4. When and where to see it
  5. What it eats
  6. Nesting and breeding
  7. Behaviour
  8. Conservation
  9. Similar birds
  10. More photos
  11. Quick facts
  12. Sources

How to recognise it

Adélie Penguins are distinctive medium-sized penguins with a classic tuxedo-like appearance. They have a black head, back, and wings contrasting sharply with a white chest and belly. Their most striking feature is the white ring around each eye.

Both males and females look alike, with no seasonal plumage changes. Juveniles are similar but have a blue-grey throat and chin instead of the adults' black colouration.

Its size

Adults
Length
70–71 cm
Wingspan
75–80 cm
Weight
3000–6000 g

Its song and calls

Adélie Penguins are known for their loud, raucous calls. Their vocalisations include a variety of squawks, growls, and trumpeting sounds.

During courtship, males produce a distinctive 'ecstatic display call,' which sounds like a series of loud, rhythmic squawks: 'aah-aah-aah-AAAH-aah.'

When and where to see it

The Adélie Penguin is not recorded regularly in the UK, Ireland, the United States or Canada.

Worldwide: recorded regularly in 2 countries

Countries where it was recorded in at least 3 of the 6 years 2019–2024. Linked countries have their own bird list.

Antarctica (2)
  • Antarctica
  • South Georgia & South Sandwich Islands

Tips for seeing it

  • Visit Antarctica or sub-Antarctic islands during the austral summer (November to February)
  • Look for large colonies on rocky, ice-free coastal areas
  • Observe from a distance to avoid disturbing nesting birds
  • Listen for loud, raucous calls that help identify the species

What it eats

Adélie Penguins primarily feed on krill, small fish, and occasionally squid. They are pursuit divers, catching prey during underwater 'flights' that can last up to 180 seconds.

Their diet varies seasonally, with a higher proportion of fish consumed during chick-rearing periods.

Nesting and breeding

Adélie Penguins form monogamous pairs and breed during the austral summer. They return to the same nesting sites each year, often reuniting with previous mates. Courtship involves mutual bowing and stone presentations.

Nests are simple depressions in rocky ground, lined with small stones. Females typically lay two eggs, which are pale green to white in colour. Both parents take turns incubating the eggs.

Incubation lasts about 32-34 days. Chicks fledge at 7-9 weeks old, forming crèches while parents forage. They become independent at about 50-60 days old.

Behaviour

Adélie Penguins are highly social birds, forming large colonies during breeding season. They are excellent swimmers, using their flippers to 'fly' underwater at speeds up to 8 km/h.

On land, they waddle upright or toboggan on their bellies across the ice, using their flippers for balance and propulsion.

Conservation

Although listed as Least Concern, they face threats due to climate change impacting their habitat and food sources. Warming temperatures are causing shifts in sea ice patterns, affecting their breeding and foraging grounds.

Conservation efforts focus on protecting their breeding sites and monitoring population trends.

Similar birds

Often mistaken for

More photos

7 photos

Quick facts

Length
70–71 cm
Wingspan
75–80 cm
Weight
3000–6000 g
Lifespan
10–20 years · oldest recorded 25 years
Family
Penguins
Migration
Short-distance migrant
Global status (IUCN)
Least Concern
World population
10,000,000 mature individuals
Population trend
Increasing
Also called
Black-throated Penguin, Adelie Penguin
Scientific name
Pygoscelis adeliae

Sources

3
  1. Conservation statusBirdLife International. 2020. Pygoscelis adeliae. The IUCN Red List of Threatened Species 2020: e.T22697758A157660553. Source (opens in a new tab)
  2. Population trendWoehler 1993, Woehler and Croxall 1997, Lynch and La Rue 2014
  3. Population estimateSouthwell et al. (2017)
Spotted a mistake?Tell usHow we write and checkBy the Birdfact team · Updated

Checked by

Nathan Cope, founder and editor

Nathan founded Birdfact and leads its writers and contributors in the UK, the US and Canada. He has watched and studied birds for more than ten years, and checks every article and species guide before it’s published.

How we write and checkAbout Nathan