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
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Nick Upton / Rooks (Corvus frugilegus) on nests at a rookery high in trees, with one bird calling, Gloucestershire, UK, Fenbruary.
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Stephen Dalton / Rooks (Corvus frugilegus) in rookery, Rookery Wood, Sussex, England, UK, April.
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Rick Price / Adelie penguin (Pygoscelis adeliae) adult being followed by a chick, Paulet Island, Antarctic Peninsula, Antarctica. January.
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Suzi Eszterhas / Student from Abraham Lincoln Elementary School watching Ninth Street Rookery through a telescope, Sonoma County, California, USA.
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Mark Carwardine / Steller / Northern sea lion (Eumetopias jubatus) rookery on rocks, Southeast Alaska, USA, August, endangered species
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Bruno D'Amicis / African Darter (Anhinga rufa) nesting colony, Tana Mtsili Island, Lake Tana Biosphere Reserve, Ethiopia.
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Bruno D'Amicis / African opennbill (Anastomus lamelligerus) juvenile birds in rookery, Tana Mtsili island. Lake Tana Biosphere Reserve, Ethiopia.
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Bruno D'Amicis / African opennbill (Anastomus lamelligerus) juvenile birds in rookery, Tana Mtsili Island, Lake Tana Biosphere Reserve, Ethiopia.
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Bruno D'Amicis / African opennbill (Anastomus lamelligerus) juvenile bird in rookery, Tana Mtsili Island, Lake Tana Biosphere Reserve, Ethiopia.
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Bruno D'Amicis / African spoonbill (Platalea alba) rookery. Tana Mtsili Island, Lake Tana Biosphere Reserve, Ethiopia.
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Marie Read / Flock of White ibis (Eudocimus albus) in breeding plumage, taking flight from rookery at edge of the mangrove-covered island, Tampa Bay, Florida, USA, March.