Hjemkomst, Viking ship after Atlantic crossing, Oslo, Norway, Scandinavia, Europe

Lunge-feeding fin whale (Balaenoptera physalus) showing distended throat grooves, Northeast Atlantic, off Morocco, North Africa, Africa

Redbilled oxpecker (Buphagus erythrorhynchus), on giraffe, Kruger National Park, South Africa, Africa

Mute swan (Cygnus olor), Martin Mere WWT, Lancashire, England, United Kingdom, Europe

An adult male flying dragon (Draco spp), displaying its dewlap, Komodo National Park, Komodo Island, Indonesia, Southeast Asia, Asia

Giraffe, Samburu National Reserve, Kenya

Common crane (Grus grus), calling at dawn in spring, Hornsborga, Sweden, Scandinavia, Europe

Mute swan (Cygnus olor) in autumn, United Kingdom, Europe

Minke whale (Balaenoptera acutorostrata) lunge feeding at the surface, with fish leaping to safety. Pink throat groveso visible. Hebrides, Scotland

Giraffe eating leaves on branch

Magnificent fregate bird (Fregata magnificens) sitting on brushwood and mating with bloated throat pouch, Genovesa Island, Tower Island, Galápagos Archipelago, Ecuador, South America

Great Frigatebird (Fregata minor), male, with inflated throat pouch, portrait, Genovesa Island, Galapagos, Ecuador, South America

Singing White-starred Blue-throat (Luscinia svecica cyanecula), Lake Duemmer, Germany, Europe

Southern elephant seal (Mirounga leonina) after harem and breeding season. Young bulls fighting and establishing pecking order. South America, Falkland Islands, January

Southern elephant seal (Mirounga leonina), old bull, after harem and breeding season on the Falkland Islands. South America, Falkland Islands, January

African Darter cleaning feathers, Marievale Bird Sanctuary, South Africa