Snowy owl (Bubo scandiacus) juvenile in flight, captive, Cumbria, England, United Kingdom, Europe

Red-tailed hawk (Buteo jamaicensis), juvenile, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Swallow-tailed bee-eater (Merops hirundineus), juvenile with a butterfly, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Crimson rosella (juvenile), Yarra Ranges National Park, Victoria, Australia, Pacific

Juvenile western gulls (Larus occidentalis) feeding on tuna crabs, Isla Magdalena, Baja California Sur, Mexico, North America

A pair of juvenile Galapagos hawks (Buteo galapagoensis), Rabida Island, Galapagos, Ecuador, South America

Adult and juvenile king penguins (Aptenodytes patagonicus), at breeding colony at Salisbury Plain, South Georgia, Polar Regions

Common ostrich (Struthio camelus) female with two chicks, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

A juvenile Galapagos hawk (Buteo galapagoensis), Rabida Island, Galapagos, Ecuador, South America

Juvenile Austral thrush (Turdus falcklandii) of the subspecies Falkland thrush (Turdus falcklandii falcklandii), Falkand Islands, South America

Red-tailed hawk (Buteo jamaicensis), juvenile, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Juvenile bald eagle (Haliaeetus leucocephalus), on king crab pots in the town of Dutch Harbor, Unalaska Island, Alaska, United States of America, North America

A juvenile Galapagos hawk (Buteo galapagoensis), Rabida Island, Galapagos, Ecuador, South America

Juvenile pale chanting goshawk (Melierax canorus), Kgalagadi Transfrontier Park, encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Juvenile magnificent frigatebird (Fregata magnificens), in flight, Isla del Espiritu Santo, Baja California Sur, Mexico, North America

A pair of juvenile Galapagos hawks (Buteo galapagoensis), Rabida Island, Galapagos, Ecuador, South America

Juvenile California gull (Larus californicus), in flight in Monterey Bay Marine Sanctuary, Monterey, California, United States of America, North America

Northern black korhaan (Eupodotis afraoides), immature male, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

A young White-faced Egret strolls through woodland near Auckland, North Island, New Zealand, Pacific

A juvenile Galapagos penguin (Spheniscus mendiculus) with a flightless cormorant, Isabela Island, Galapagos, Ecuador, South America

Juvenile brown pelican (Pelecanus occidentalis), in flight in Monterey Bay Marine Sanctuary, Monterey, California, United States of America, North America

Juvenile Yellow Crowned Night Heron, Bermuda, Atlantic, Central America

Juvenile American white ibis (Eudocimus albus), standing beside lake, Fort Lauderdale, Florida, United States of America, North America

Juvenile brown pelican (Pelecanus occidentalis), sunbathing on Isla Ildefonso, Baja California, Mexico, North America

Juvenile pale chanting goshawk (Melierax canorus), Kgalagadi Transfrontier Park, encompasing the former Kalahari Gemsbok National Park, South Africa, Africa

Juvenile American robin (Turdus migratorius), Gunnison County, Colorado, United States of America, North America

A juvenile great frigatebird (Fregata minor) in flight on North Seymour Island, Galapagos, Ecuador, South America

An juvenile acorn woodpecker (Melanerpes formicivorous), Madera Canyon, southern Arizona, Arizona, United States of America, North America

White-crowned sparrow (Zonotrichia leucophrys), juvenile, Bosque del Apache National Wildlife Refuge, New Mexico, United States of America, North America

Kori bustard (Ardeotis kori) adult and ckick, Ngorongoro Conservation Area, Tanzania, East Africa, Africa

Juvenile great frigatebird (Fregata minor), perched on a tree on North Seymour Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Juvenile brown pelican (Pelecanus occidentali)s, in flight in Concepcion Bay, Baja California, Mexico, North America

Peregrine chicks (Falco peregrinus), after being ringed, Northumberland National Park, England, United Kingdom, Europe

Juvenile gray-crowned rosy-finch (Leucosticte tephrocotis), Glacier National Park, Montana, United States of America, North America

A juvenile great frigatebird (Fregata minor) in the nest on North Seymour Island, Galapagos, Ecuador, South America

Juvenile California gull (Larus californicus), in flight in Monterey Bay Marine Sanctuary, Monterey, California, United States of America, North America

Juvenile brown pelican (Pelecanus occidentalis), in flight in Monterey Bay Marine Sanctuary, Monterey, California, United States of America, North America

A juvenile great frigatebird (Fregata minor) in the nest on North Seymour Island, Galapagos, Ecuador, South America

Juvenile American robin (Turdus migratorius), Gunnison County, Colorado, United States of America, North America

Spotted Owlet bird, Athene brama, in Ranthambhore National Park, Rajasthan, Northern India

Blue-footed Booby juvenile bird on Galapagos Islands, Ecuador

Blue-footed Booby bird feeds juvenile on Galapagos Islands, Ecuador

Baby buzzard in barn, Asthall, The Cotswolds, Oxfordshire, England, United Kingdom

Blue-footed Booby bird on the Galapagos Islands, Ecuador with a pair of young birds

One living and one dead Blue-footed Booby bird on the Galapagos Islands, Ecuador

Blue-footed Booby juvenile birds on the Galapagos Islands, Ecuador

Female Osprey and juvenile perched on bare branches of tree, Daintree River, Queensland, Australia

Juvenile Blue-footed Booby bird on the Galapagos Islands

Juvenile Tiger Heron on the prow of a boat on Lake Sandoval, Peruvian Rainforest, South America

Juvenile Tiger Heron, Tortuguero National Park, Costa Rica, Central America

A Common Starling, Sturnus vulgaris in Seahouses, Northumberland, UK, moulting from Juvenile to adult plumage.

On Friday 11th July 2014, the Young Ospreys that nest on Bassenthwaite in the Lake District National Park, Cumbria, UK, are ringed and fitted with a satelite tracker. they are ringed by Pete Davis, a licensed bird ringer, and the satelite tracker is fitred by Roy Dennis. Roy is theonly person in the UK, licensed to fit satelite trackers to birds of prey. The tracing is part of the Bassenthwaite Osprey project, to see whereabouts in Africa the young migrate to, before returning hopefully to the UK to nest.Ospreys recolonized the Lake district in 2001, after an absence ovf over 150 years. In the last fourteen years of breeding over half a million people have visited the project to view these spectacular fish eating birds.

On Friday 11th July 2014, the Young Ospreys that nest on Bassenthwaite in the Lake District National Park, Cumbria, UK, are ringed and fitted with a satelite tracker. they are ringed by Pete Davis, a licensed bird ringer, and the satelite tracker is fitred by Roy Dennis. Roy is theonly person in the UK, licensed to fit satelite trackers to birds of prey. The tracing is part of the Bassenthwaite Osprey project, to see whereabouts in Africa the young migrate to, before returning hopefully to the UK to nest.Ospreys recolonized the Lake district in 2001, after an absence ovf over 150 years. In the last fourteen years of breeding over half a million people have visited the project to view these spectacular fish eating birds.

On Friday 11th July 2014, the Young Ospreys that nest on Bassenthwaite in the Lake District National Park, Cumbria, UK, are ringed and fitted with a satelite tracker. they are ringed by Pete Davis, a licensed bird ringer, and the satelite tracker is fitred by Roy Dennis. Roy is theonly person in the UK, licensed to fit satelite trackers to birds of prey. The tracing is part of the Bassenthwaite Osprey project, to see whereabouts in Africa the young migrate to, before returning hopefully to the UK to nest.Ospreys recolonized the Lake district in 2001, after an absence ovf over 150 years. In the last fourteen years of breeding over half a million people have visited the project to view these spectacular fish eating birds.

On Friday 11th July 2014, the Young Ospreys that nest on Bassenthwaite in the Lake District National Park, Cumbria, UK, are ringed and fitted with a satelite tracker. they are ringed by Pete Davis, a licensed bird ringer, and the satelite tracker is fitred by Roy Dennis. Roy is theonly person in the UK, licensed to fit satelite trackers to birds of prey. The tracing is part of the Bassenthwaite Osprey project, to see whereabouts in Africa the young migrate to, before returning hopefully to the UK to nest.Ospreys recolonized the Lake district in 2001, after an absence ovf over 150 years. In the last fourteen years of breeding over half a million people have visited the project to view these spectacular fish eating birds.

Wandering albatross (diomedea exulans) prion island, south georgia, chick sat on nest, close-up

Wandering albatross (diomedea exulans) prion island, south georgia, adult feeding chick

Black-shouldered kite (elanus caeruleus) juvenile showing yellow eye, portrait, captive, south africa

Bateleur eagles. Terathopius ecaudatus. Adult and juvenile perched on branch, botswana

A juvenile Arctic Skua (Stercorarius parasiticus) on the coast in Northumberland, UK

Wandering albatross (diomedea exulans) prion island, south georgia, chick exercising wings

Gentoo penguin. Pygoscelis papua. Royal bay, south georgia, antarctica

Mute swan (cygnus olor) swimming with cygnets, oxfordshire, uk

Gentoo penguin. Pygoscelis papua. Chick. Wiencke island. Antarctica

Wandering albatross (diomedea exulans) prion island, south georgia, chick sat on nest

Southern crested caracara (caracara plancus) head of juvenile, pantanal, brazil.

Gentoo penguins. Pygoscelis papua. Juvenile gentoos hanging around a pool. Antarctica

Ruddy turnstone (Arenaria interpres) juvenile, Svalbard, Norway, Scandinavia, Europe

marabou stork leptoptilos crumeniferus juvenile kent, england

A pair of young Brown Bear (Ursus arctos) fishing for pink and dog salmon on Chichagof Island in Southeast Alaska, USA

Adult Magellan goose or upland goose (Chloephaga picta) with goslings on Carcass Island in the Falkland Islands, South Atlantic Ocean

A parent and chick Adelie penguin (Pygoscelis adeliae) on Paulet Island on the Northeast side of the Antarctic Peninsula.

Adelie penguin chick (Pygoscelis adeliae) fledging its downy feathers for the adult feathers underneath on Devil Island, Antarctica.

Gentoo penguin (Pygoscelis papua) chicks covered with mud and guano on Cuverville Island, Antarctica, Southern Ocean

Adelie penguin (Pygoscelis adeliae) tobogganing near the Antarctic Peninsula, Antarctica.

Sub-adult Humpback Whale, Megaptera novaeangliae, breaching in northern Gulf of California, Mexico

Juvenile magnificent frigatebird (Fregata magnificens) on the wing near breeding colony on Isla Magdalena, Bahia de Magdalena, Baja California Sur, Mexico.

Great frigatebird (Fregata minor) chick in the nest in the Galapagos Island Archipelago, Ecuador

Juvenile great frigate bird (Fregata minor) nesting and breeding site on North Seymour Island in the Galapagos Island Group, Ecuador. Pacific Ocean.

Juvenile great frigate birds (Fregata minor) vie for food on nesting and breeding site on North Seymour Island in the Galapagos Island Group, Ecuador. Pacific Ocean

The Kelp Goose (Chloephaga hybrida), is a member of the duck, goose and swan family Anatidae

A leucistic Adelie penguin (Pygoscelis adeliae) adult feeding its "normal" colored chicks on Devil Island near the Antarctic Peninsula

Curious king penguin (Aptenodytes patagonicus) breeding and nesting colony at St. Andrews Bay on South Georgia, Southern Ocean.

Southern elephant seal (Mirounga leonina) pup (often called "weaners" once their mothers stop nursing them) on South Georgia Island in the Southern Ocean

Adult Antarctic Shag, (Phalacrocorax (atriceps) bransfieldensis) from breeding colony on the Antarctic Peninsula

A young Brown Bear (Ursus arctos) fishing for pink and dog salmon on Chichagof Island in Southeast Alaska, USA

King penguin (Aptenodytes patagonicus) breeding and nesting colony on South Georgia Island, Southern Ocean.

A juvenile red-tailed hawk (Buteo jamaicensis) on a perch near San Jose del Cabo, Baja California Sur, Mexico.

South Georgia pintail (Anas georgica georgica) chick on South Georgia, Southern Ocean

Juvenile bald eagle (Haliaeetus leucocephalus) in flight in Takatz Bay on Baranof Island, Southeast Alaska, USA

Juvenile great frigate bird (Fregata minor) with inflated gular on North Seymour Island in the Galapagos Island Group, Ecuador. Pacific Ocean

Gentoo penguins (Pygoscelis papua) in Antarctica

Grave site at the abandoned former whaling station at Port Foster inside of the caldera at Deception Island, South Shetland Islands, Antarctica, Southern Ocean

A young striated heron (Butorides striata) fishing along the lava shore in the Galapagos Islands, Ecuador. Pacific Ocean.

Young southern elephant seals (Mirounga leonina) on the beach at South Georgia in the Southern Ocean

Gentoo penguin (Pygoscelis papua) parent feeding downy chick on Pleneau Island, near the Antarctic Peninsula.

Northern giant petrel (Macronectes halli) fighting over the scavenging rights to a dead elephant seal pup at St. Andrews Bay on South Georgia Island, Southern Ocean

Grey-headed Albatross (Thalassarche chrysostoma) chick begging for food on nesting grounds in Elsehul Bay, South Georgia Island.

Young rockhopper penguin (Eudyptes chrysocome moseleyi) molting on Nightingale Island in the Tristan da Cunha Island Group, South Atlantic Ocean

Black-browed albatross (Thalassarche melanophrys) chick (head detail) at Devil's Nose on New Island in the Falkland Island Group, Falklands.