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  1. Species
  2. ›
  3. Stercorariidae
  4. ›
  5. Stercorarius
  6. ›
  7. Parasitic Jaeger
Parasitic Jaeger
Photo · (c) Andrew Allen, some rights reserved (CC BY)

BirdUp · Species

Parasitic Jaeger

Stercorarius parasiticus(Linnaeus, 1758)

Updated 21 March 2026

Origin: Native
Order
CHARADRIIFORMES
Family
Stercorariidae
Genus
Stercorarius

At a glance

The Parasitic Jaeger is a large bird, about 46–67 cm long, native to Australia. It can be seen year-round.

Size
46–67 cm
Origin
Native
Best seen
Year-round
Commonness
Very common
  • Identification
  • Where
  • When
  • Behaviour

01 · Identification

How to tell it apart

What does a Parasitic Jaeger look like?

The Parasitic Jaeger is a large bird, about 46–67 cm long and weighing 301–644 g.

The parasitic jaeger or arctic jaeger, also known as the parasitic skua or arctic skua in Europe, is a seabird in the skua family Stercorariidae. It is a migratory species breeding in Northern Fennoscandia, Scotland, Iceland, Greenland, Northern Canada, Alaska, and Siberia and wintering across the southern hemisphere. Kleptoparasitism is a major source of food for this species during migration and winter, and is where the name is derived from.

Description · wikipedia · CC BY-SA 4.0

Field specs

Length
46–67 cm
Weight
301–644 g

Measurements · avonet · CC BY 4.0

03 · When

When to look

When can you see a Parasitic Jaeger?

The Parasitic Jaeger is present across its Australian range year-round, so it can be seen in any month.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

05 · Behaviour

Habits and haunts

What does a Parasitic Jaeger eat?

The Parasitic Jaeger feeds on terrestrial invertebrates, terrestrial vertebrates and fish/invertebrates, usually foraging in pairs or flocks or alone.

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02 · Where

Where to find it

Where does the Parasitic Jaeger live in Australia?

The Parasitic Jaeger is native to Australia, recorded across 27 of Australia’s bioregions.

BreedingNA, PAL : Holarctic low Arctic tundra, locally high Arctic and subarctic: west and south Greenland, Iceland, north Scotland, Scandinavian coasts including Baltic Sea, Svalbard (north of Norway), north Russia to north-east Siberia and Kamchatka, Aleutian and Bering Sea is., west and south-west Alaska, Arctic Canada (except north high Arctic islands) to Baffin I. and east-central Canada

Non-breedingTo high-productivity subtropical to tropical coastal waters of south continents: coastal west, south and east-central Africa, Persian Gulf, east coast Arabian Sea (west India and Sri Lanka), north Indian Ocean, Australia and New Zealand, Peru, Chile and east-central Argentina

Distribution from BirdUp Australia community data

Legend

  • Breeding
  • Resident
  • Non-breeding
  • Passage

8 regions recorded