Wallace's Line: Where Two Bird Worlds Collide

An introduction to the remarkable geographic feature that divides the birds of Asia and Australia

February 18, 2022

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Wallace's Line: Where Two Bird Worlds Collide


This episode—which is Number 46—is about  a special place in the Malay Archipelago where two bird worlds collide. This region lies between Southeast Asia and Australia, between the Indian and Pacific oceans. And it’s crowded with about 25,000 islands, of all sizes.

Specifically, we’ll be looking at a geographic feature called Wallace’s Line. More generally, today’s episode will touch on the topic of biogeography.

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  • Red Bird-of-Paradise sounds (Xeno Canto recordings XC409467)
  • Crested White-eye sounds (Xeno Canto recordings XC410480)
  • Flores Monarch sounds (Xeno Canto recordings XC410483)
  • Scaly-crowned Honeyeater sounds (Xeno Canto recordings XC410389)

This work by Ivan Phillipsen is licensed under CC BY-NC-SA 4.0

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