Francois Savigny / Hadada ibis {Bostrychia hagedash}calling, Kruger NP, South Africa

Francois Savigny / Mixed flock of Red, White and Black ibises taking off at sunset Llanos, Hato el Frio, Venezuela

Tim Laman / Scarlet ibises (Eudocimus ruber) feeding at the low tide line on mudflats, Orinoco River Delta, Venezuela.

Tim Laman / Scarlet Ibises (Eudocimus ruber) flying onto the top of a mangrove tree in the Orinoco River Delta, Venezuela.

Tim Laman / A group of Scarlet Ibises (Eudocimus ruber) flying against blue sky, Amacuro, Venezuela.

Jean E. Roche / Glossy ibises (Plegadis falcinellus) in flight, Scamandre Nature Reserve, Camargue, France, June.

Bruno D'Amicis / African sacred ibis (Threskiornis aethiopicus) stretching wings in water, Fogera plains, Lake Tana Biosphere Reserve. Ethiopia.

Zoltan Nagy / Glossy Ibises (Plegadis falcinellus) foraging in the Danube Delta, Romania. June

Wild Wonders of Europe / Lundgren / Ten Glossy ibises (Plegadis falcinellus) in flight, Danube Delta, Romania, June.

Juan Carlos Munoz / Northern Bald Ibises (Geronticus eremita) captive, Apenheul Park, Netherlands.

Bert Willaert / Black-faced Ibis (Theristicus melanopis) on coast of Mocha Island, Chile, December

Bert Willaert / Black-faced Ibises (Theristicus melanopis) on coast of Mocha Island, Chile, December