Magpie Goose illustration
Birdsong field guide

Magpie Goose

Anseranas semipalmata

The Magpie Goose is a taxonomically unique, primitive waterbird easily identified by its striking black-and-white plumage and prominent cranial knob. It represents the sole living member of the family Anseranatidae, predating the divergence of modern ducks and geese.

What it sounds like

A loud, high-pitched, and resonant trumpeting or clanging honk that can be heard from a distance.

Reference call, compare with what you heard
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Rec. James Lambert · AustraliaCC BY-NC-NDXeno-canto

Field notes

  • It is the only extant representative of its family, making it an evolutionarily distinct lineage within the Anseriformes.
  • Unlike true geese, it has only partially webbed feet, which allow it to easily perch and roost in trees.
  • The species does not undergo a simultaneous wing-molt, meaning it remains capable of flight year-round unlike most other waterfowl.
  • They often practice polygamous breeding, with trios of one male and two females sharing a single nest to raise a joint clutch.
  • The bony knob on the forehead of adults continues to grow throughout their life and is used as a signal of social status and age.
Habitat
Seasonally flooded tropical wetlands, floodplains, and swamps with dense emergent vegetation.
Range
Northern Australia and southern New Guinea.
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