Roy Mangersnes / Yellow-crowned night-heron (Nyctanassa violacea) portrait on Genovesa, Galapagos.

Lynn M. Stone / Yellow-crowned night heron (Nyctanassa violacea) stalking ghost crabs on sand dune. Mullet Key, Tampa Bay, St, Petersburg, Florida, USA.

Robin Chittenden / Yellow-crowned night heron (Nyctanassa violacea) Trinidad and Tobago, April

Nate Chappell/ BIA / Yellow-crowned Night Heron (Nyctanassa violacea) swallowing frog, Texas

George Sanker / Yellow crowned Night Heron (Nyctanassa violacea) with prey in beak, Tampa Bay, Florida, USA.

Melvin Grey / Yellow-crowned night heron (Nyctanassa violacea cayennensis) Speyside, Tobago.

George Sanker / Yellow-crowned night heron (Nyctanassa violacea) in mangrove swamp. Ding Darling National Wildlife Refuge, Florida, USA, March.

John Cancalosi / Yellow-crowned night heron (Nyctanassa violacea, formerly placed in the genus Nycticorax), Washington DC, USA, May.

John Cancalosi / Yellow-crowned night heron (Nyctanassa violacea, formerly placed in the genus Nycticorax), Washington DC, USA, May.

Pete Oxford / Yellow-crowned night heron (Nyctanassa violacea) two on beach, Galapagos.

Ole Jorgen Liodden / Yellow-crowned night heron (Nyctanassa violacea pauper) catching Ghost crab (Ocypode) on beach, Galapagos.

LYNN M. STONE / Yellow-crowned night heron (Nyctanassa violacea) with Ghost Crab on beach dune along Tampa Bay, Gulf of Mexico, St. Petersburg, Florida, USA