Adult arctic tern (Sterna paradisaea) returning to chick with small fish, Flatey Island, Iceland, Polar Regions

Adult male magnificent frigatebird (Fregata magnificens), Las Bachas, Santa Cruz Island, Galapagos Islands, Ecuador, South America

Elegant tern (Thalasseus elegans) with fish, Isla Rasa, Gulf of California (Sea of Cortez), Baja California, Mexico, North America

Adult arctic tern (Sterna paradisaea) returning to chick with small fish, Flatey Island, Iceland, Polar Regions

Imperial shag (Phalacrocorax atriceps albiventer) in flight, New Island, Falkland Islands, South Atlantic Ocean, South America

Grey-headed kingfisher (Halcyon leucocephala) with lizard at Curral Grande, Fogo Island, Cape Verde, Africa

Puffin (Fratercula arctica) with sand eels, Farne Islands, Northumberland, England, United Kingdom, Europe

Yellow-billed stork (Mycteria ibis) carrying nesting material, Chobe National Park, Botswana, Africa

Puffin (Fratercula arctica) with sand eels, Farne Islands, Northumberland, England, United Kingdom, Europe

Adult chinstrap penguin (Pygoscelis antarctica), carrying rock in its beak at breeding colony at Half Moon Island, Antarctica, Polar Regions

Adult chinstrap penguin (Pygoscelis antarctica), carrying rock in its beak at breeding colony at Half Moon Island, Antarctica, Polar Regions

White-fronted tern (Sterna Striata) in flight with fish in beak, across the Hauraki Gulf off the Coromandel Peninsula, North Island, New Zealand

White stork, ciconia ciconia, in flight, with baby in its beak, bringing offspring, baby child, composition

White stork, storch, ciconia ciconia, with baby in its beak, bringing offspring, baby child, digital composition

King cormorant (phalacrocorax atriceps) also known as cormorant or blue-eyed shag, falkland islands, adult gathering nesting in its beak.

Adult yellow-footed Gull (Larus livens) in the Gulf of California (Sea of Cortez), Mexico

Adult yellow-footed Gull (Larus livens) in the Gulf of California (Sea of Cortez), Mexico

Norther flicker (Colaptes auratus) leaving the nest with wood chips in it's mouth, Forillon National Park; Quebec, Canada

Portrait of a Cape Buffalo (Syncerus caffer) drinking from river carrying two cattle egrets (Bubulcus ibis) on its back in Chobe National Park, Chobe, Botswana

Lilac-breasted roller (Coracias caudatus) lands on branch carrying grasshopper, Serengeti National Park,, Tanzania

Researchers picking up pollen with a brush from the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui , Costa Rica

Researchers picking up pollen with a brush from the beak of a hummingbird Stripe-throated Hermit as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

Researcher measuring the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

Researchers picking up pollen using tape on the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica