Lava Heron illustration
Birdsong field guide

Lava Heron

Butorides sundevalli

The Lava Heron is a small, dark-plumaged heron endemic to the Galápagos Islands, uniquely adapted to camouflage against volcanic basalt rocks. It is a solitary predator known for its specialized hunting techniques along rocky shorelines.

What it sounds like

A sharp, high-pitched, and explosive 'skeow' or 'kyow' sound, typically used as an alarm or territorial warning.

Reference call, compare with what you heard
No reference call found yet · Xeno-canto

Field notes

  • It is closely related to the Striated Heron but has evolved significantly darker slate-grey plumage to match its volcanic environment.
  • During the breeding season, its legs undergo a striking color change from dull grey or green to a vibrant bright yellow.
  • Unlike many other heron species, Lava Herons are highly territorial and remain solitary year-round.
  • They are unusually fearless of humans, a trait characteristic of many species isolated on the Galápagos archipelago.
  • Their diet primarily consists of small fish and Sally Lightfoot crabs, which they catch using a 'stand and wait' ambush strategy.
Habitat
Intertidal zones, rocky volcanic shorelines, and mangrove fringes.
Range
Endemic to the Galápagos Islands, Ecuador.

Similar & commonly confused birds

Heard a Lava Heron?

Open Birdsong, tap record, and identify the bird singing near you in seconds — then collect it in your field journal.

Identify a bird by its song