Yellow-crowned Night Heron illustration
Birdsong field guide

Yellow-crowned Night Heron

Nyctanassa violacea

A stocky, medium-sized heron with a distinctive black head and pale yellow crown, known for its specialized diet of crustaceans.

What it sounds like

A sharp, high-pitched nasal 'qwock' or 'quak', typically higher and more strident than the Black-crowned Night Heron.

Reference call, compare with what you heard
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Rec. Albert Lastukhin · Costa RicaCC BY-NC-NDXeno-canto

Field notes

  • Specializes in eating crabs and crayfish, earning it the nickname 'crab eater' in some regions.
  • Possesses a thicker, heavier bill than the Black-crowned Night Heron, specifically adapted for crushing hard shells.
  • Juveniles possess a brown-streaked plumage that provides camouflage in marshy environments for up to three years.
  • Though primarily nocturnal or crepuscular, they are frequently observed foraging during daylight hours depending on tidal cycles.
  • They are more solitary nesters than many other herons, often choosing sites in suburban trees away from large rookeries.
Habitat
Coastal salt marshes, mangroves, swamps, and wooded wetlands, often near brackish or salt water.
Range
Eastern and central United States south through the Caribbean and Central America to northern South America.

Similar & commonly confused birds

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