Tom Vezo / Little Blue Heron (Egretta caerulea), Florida

Tom Vezo / Little Blue Heron (Egretta caerulea), Florida

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Steve Gettle / Little Blue Heron (Egretta caerulea) foraging, Fort Myers Beach, Florida

Steve Gettle / Little Blue Heron (Egretta caerulea) flying, Fort Myers Beach, Florida

Christian Ziegler / Little Blue Heron (Egretta caerulea) in mangroves, near Hopkins, Belize

LYNN M. STONE / Little Blue Heron (Egretta caerulea) with a caught invertebrate in its beak. Tampa Bay, Florida, USA, November.

Daniel Heuclin / Little Blue Heron (Egretta caerulea) walking through long grass. Everglades National Park, Florida, November.

Rolf Nussbaumer / Little Blue Heron (Egretta caerulea) walking in long grass of marshland, Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA

Rolf Nussbaumer / Little Blue Heron (Egretta caerulea) walking in long grass of marshland, Fennessey Ranch, Refugio, Coastal Bend, Texas Coast, USA

Donald M. Jones / Little Blue Heron (Egretta caerulea) hunting for fish, Myakka Lake, central Florida

Scott Leslie / Little Blue Heron (Egretta caerulea) flying, Everglades National Park, Florida

Tim Laman / Early morning light illuminates a wall of Red mangroves (Rhizophora mangle) at the edge of a lagoon in Caroni Swamp. A single juvenile little blue heron (Egretta caerulea) perches in the mangroves. C...

Tim Laman / Early morning light illuminates a wall of Red mangroves (Rhizophora mangle) at the edge of a lagoon in Caroni Swamp. A single juvenile little blue heron (Egretta caerulea) perches in the mangroves. C...

Tim Laman / Juvenile Little blue heron (Egretta caerulea) takes flight from a mangrove tree, Caroni Bird Sanctuary, Caroni Swamp, Trinidad.

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) on nest, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) wading through wetland, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) wading in water, Rio Grande Valley, Texas

Tom Vezo / Little Blue Heron (Egretta caerulea) wading in wetland, Rio Grande Valley, Texas

John Cancalosi / Little blue heron (Egretta caerulea) calling in tree, Louisiana, USA

Tom Vezo / Little blue heron {Egretta caerulea} perching on branch, Florida, USA

George McCarthy / Little Blue Heron {Egretta caerulea} Everglades NP, Florida, USA

Steven David Miller / Little blue heron {Egretta caerulea} with dragonfly in beak, SW Florida, USA

Bernard Castelein / Little blue heron {Egretta caerulea} Sanibel Is, Florida

LYNN M. STONE / Little blue heron {Egretta caerula} Florida, USA.

Winfried Wisniewski / Little Blue Heron (Egretta caerulea) perching on submerged log in pond, North America

Tom Vezo / Little Blue Heron (Egretta caerulea) juvenile perching in tree, Tortuguero National Park, Costa Rica

Rolf Nussbaumer / Little blue heron {Egretta caerulea} on water lettuce, Florida, USA

Yva Momatiuk & John Eastcott / Little Blue Heron (Egretta caerulea) perched on Common Water Hyacinth (Eichhornia crassipes) in marsh, Louisiana

John Cancalosi / Little blue heron {Egretta caerulea} with frog prey. Louisiana, USA

John Cancalosi / Little blue heron {Egretta caerulea} Louisiana, USA

Tom Vezo / Little blue heron perched {Egretta caerulea} Florida, USA.

LYNN M. STONE / Little blue heron (Egretta caerulea) wading in shallow water, Florida, USA

Thomas Mangelsen / Little Blue Heron (Egretta caerulea) foraging among water lettuce, Everglades National Park, Florida

Gerry Ellis / Little Blue Heron (Egretta caerulea) with shrimp, tropical Americas

David Welling / Little blue heron breeding plumage {Egretta caerulea} Texas USA