Heike Odermatt / Brunnich's Guillemot (Uria lomvia) nesting colony on cliff, Alkefjellet, Hinlopen Strait, Svalbard, Norway

Danny Green / Brunnich's guillemot (Uria lomvia) colony in mist, many birds in flight and nesting on cliffs. Svalbard, Norway, July 2018.

John Shaw / Roseate spoonbill (Platalea ajaja) at its nesting colony site, in early morning light. St. Johns Management Area, Florida, USA, April.

Marie Read / Arctic terns (Sterna paradisaea), two in flight over nesting colony in field of buttercups (Ranunculus sp.), Keflavik, Iceland. Digital canvas expansion.

Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) flock nesting on island, Lake Natron, Tanzania

Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) nesting colony, Lake Natron, Tanzania

Philippe Clement / Wide-angle shot of Northern gannets (Morus bassanus) nesting in a breeding colony, Hermaness NNR, Unst, Shetland Islands, Scotland, UK, May.

Philippe Clement / Great cormorant (Phalacrocorax carbo) bringing twig to nest in breeding colony, Belgium, March.

Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) building up mud whilst brooding egg, breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Portfolio Category of...

Frederique Olivier / Chinstrap penguin (Pygoscelis antarcticus) moving a feather in its nest, Aitcho Island, South Shetland Islands.

Frederique Olivier / Chinstrap penguin (Pygoscelis antarcticus) adding a stick to its nest and fighting with a neighbouring pair, Aitcho Island, South Shetland Islands.

Ingo Arndt / Cape gannets (Morus capensis / Sula capensis) at nesting colony, zooming from tight to wide shot, Lamberts Bay, South Africa, December