Marie Read / Flock of White ibis (Eudocimus albus) in breeding plumage, at rookery on water's edge of the mangrove-covered island, Tampa Bay, Florida, USA, March

Nick Garbutt / Scarlet Ibis (Eudocimus ruber) flying into roost sight at dusk, Hato La Aurora Reserve, Los Llanos, Colombia, South America.

Juan Carlos Munoz / Great egret (Ardea alba) perched in a tree, with an American White Ibis (Eudocimus albus) in flight, Everglades National Park, Florida, USA.

Barrie Britton / Scarlet ibis (Eudocimus ruber) in flight, Caroni Swamp, Trinidad. Picture taken during filming for BBC "Secrets of the Caribbean" TV Series, January 2006

Tim Laman / Scarlet ibis (Eudocimus ruber) and Snowy egret {Egretta thula} flying out from their mangrove roosting trees before sunrise in the Caroni Swamp, Caroni Bird Sanctuary, Trinidad.

Luiz Claudio Marigo / Scarlet ibis {Eudocimus ruber} and Egrets in flight, Canelas Is, Brazil

Thomas Mangelsen / White Ibis (Eudocimus albus) trio feeding at sunset, Ding Darling National Wildlife Refuge, Sanibel Island, Florida

George Sanker / American white ibis (Eudocimus albus) feeding amongst plants in morning light. Myakka River State Park, Florida, USA, March.

George Sanker / American white ibis (Eudocimus albus) wading in morning light. Myakka River State Park, Florida, USA, March.

George Sanker / American white ibis (Eudocimus albus) foraging in morning light. Myakka River State Park, Florida, USA, March.

George Sanker / American white ibis (Eudocimus albus) wading in morning light. Myakka River State Park, Florida, USA, March.

Marie Read / Avian feeding frenzy with a flock of White Pelicans (Pelecanus erythrorhynchos) swimming along a channel chasing school of fish. A mixed flock of long-legged waders, including Great Egrets (Ardea alba...