George Sanker / Green heron (Butorides virescens) hunting for fish, camouflaged against tree roots, Everglades National Park, Florida, USA, March

Rolf Nussbaumer / Green heron {Butoides virescens} chick portrait, Welder Wildlife Refuge, Sinton, Texas, USA.

Tom Vezo / Green heron with eggs on nest {Butorides virescens} Mexico

Tom Vezo / Green heron {Butorides virescens} Mexico

Tom Vezo / Green heron with frog prey {Butorides virescens} Mexico

Tom Vezo / Green heron {Butorides virescens} Mexico

George Sanker / Green Heron (Butorides virescens) in wetlands. Everglades National Park, Florida, USA, March.

George Sanker / Green heron (Butorides virescens) hunting for fish, feet gripping onto branch in balancing act, Everglades National Park, Florida, USA, March

George Sanker / Green heron (Butorides virescens) just after successful fish hunt, Everglades National Park, Florida, USA, March

George Sanker / Green heron (Butorides virescens) hunting for fish, Everglades National Park, Florida, USA, March

George Sanker / Green heron (Butorides virescens) watching for fish, Everglades National Park, Florida, USA, March

Barry Mansell / Green Heron (Butorides virescens) crouching on branch waiting for prey, Everglades National Park, South Florida, USA, May

Barry Mansell / Green Heron (Butorides virescens) crouching on branch waiting for prey, Everglades National Park, South Florida, USA, May

George Sanker / Green heron (Butoroides virescens) perched, Hillsborough river SP, Florida, USA

Donald M. Jones / Green Heron (Butorides virescens) hunting from a mat of floating vegatation, Florida

Donald M. Jones / Green Heron (Butorides virescens) catching minnow, Everglades National Park, Florida. Sequence 2 of 2

Donald M. Jones / Green Heron (Butorides virescens) fishing for minnows, Everglades National Park, Florida

Donald M. Jones / Green Heron (Butorides virescens) striking at minnow, Everglades National Park, Florida. Sequence 1 of 2

Marie Read / Green Heron (Butorides virescens) in flight over water, carrying nest material, Orlando, Florida, USA

Thomas Marent / Green Heron (Butorides virescens), Tortuguero National Park, Costa Rica

Jouan & Rius / Green heron (Butorides virescens) in the waterways of Tortuguero NP, Costa Rica

Barry Bland / Green Heron {Butorides virescens} perching in tree, Florida, USA

Rolf Nussbaumer / Green Heron (Butorides virescens) with neck outstretched surrounded by Yellow Water Lily pads, Welder Wildlife Refuge, Sinton, Texas, USA. June 2005

Rolf Nussbaumer / Green Heron (Butorides virescens) in water, Starr County, Rio Grande Valley, Texas, USA. May 2002

Rolf Nussbaumer / Green Heron (Butorides virescens) with crest raised, Lake Corpus Christi, Texas, USA. May 2003

Philippe Clement / Green heron (Butorides virescens) in swamp, Carara NP, Costa Rica

Philippe Clement / Green heron (Butorides virescens) in swamp, Carara NP, Costa Rica

Shattil & Rozinski / Green heron {Butorides virescens} Texas, USA

Tom Vezo / Green Heron {Butorides virescens} preening on branch, Long Island, NY, USA.

Tom Vezo / Green Heron {Butorides virescens} perching on branch with feathers ruffled, Long Island, NY, USA.

Tom Vezo / Green heron {Butorides virescens} amongst vegetation beside water, Florida, USA

Rolf Nussbaumer / Green heron {Butoides virescens} with young begging for food at nest in Willow Tree, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Green heron {Butoides virescens} chick in nest, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Green heron {Butoides virescens} with chicks at nest in Willow Tree, Welder Wildlife Refuge, Sinton, Texas, USA.

Rolf Nussbaumer / Green heron {Butoides virescens} on Yellow Water Lily pads, Welder Wildlife Refuge, Sinton, Texas, USA

Tom Vezo / Green heron {Butorides virescens} Mexico

Tom Vezo / Green heron fishing {Butorides virescens} Mexico

Rolf Nussbaumer / Green heron catching frog {Butorides virescens} Texas, USA

Tom Vezo / Green Heron (Butorides virescens) with frog it has caught, Rio Grande Valley, Texas

Tom Vezo / Green Heron (Butorides virescens) on nest with eggs, Rio Grande Valley, Texas

Tom Vezo / Green Heron (Butorides virescens) perched over water, Rio Grande Valley, Texas

Tom Vezo / Green Heron (Butorides virescens) perching on reeds, Everglades National Park, Florida

Gerry Ellis / Aerial view of Heron Island, Great Barrier Reef Marine Park, Queensland, Australia

Jim Brandenburg / Green Heron (Butorides virescens) hunting, Florida

Tom Vezo / Green heron, Everglades NP, Florida, USA

Tom Vezo / Green heron (Butorides virescens). Everglades NP, Florida, USA

Tom Vezo / Green Heron (Butorides virescens) perching on mangrove roots, Florida

Tom Vezo / Green heron {Butorides virescens} foraging amongst mangrove roots, Everglades NP, Florida, USA

Norbert Wu / Reef-walking, Great Barrier Reef, Heron Island, Australia