Male Northern Cardinal (Cardinalis cardinalis), a mid sized songbird common in Eastern North America, Bermuda, Atlantic, North America

Great Kiskadee, (Pitangus Sulphuratus), a passerine bird common in Central and South America, Bermuda, Atlantic, North America

Common white-tern (Gygis alba), Denis Island, Seychelles, Indian Ocean, Africa

Portrait of a common zebra (Equus quagga), walking with a northern carmine bee-eater (Merops rubicus) on its back, Kenya, East Africa, Africa

Sandpiper (Scolopacidae), a common wading bird, Bermuda, Atlantic, North America

Male Northern Cardinal (Cardinalis cardinalis), a mid sized songbird common in Eastern North America, Bermuda, Atlantic, North America

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

Common shelduck (Tadorna tadorna) drake in flight against a blue sky, Gloucestershire, England, United Kingdom, Europe

Great Kiskadee, (Pitangus Sulphuratus), a passerine bird common in Central and South America, Bermuda, Atlantic, North America

Common Redshank (Redshank) (Tringa totanus), Lake Myvatn, Iceland, Polar Regions

European Herring gull (Larus argentatus), declined due to less fish but a common scavenger, New Quay, Ceredigion, Wales, United Kingdom, Europe

Common ostrich (Struthio camelus) drinking, Kgalagadi Transfrontier Park encompassing the former Kalahari Gemsbok National Park, South Africa, Africa

Common buzzard (Buteo buteo) landing on Pennine Way sign, Controlled, Cumbria, England, United Kingdom, Europe

Common white-tern (Gygis alba), Denis Island, Seychelles, Indian Ocean, Africa

Common merganser (goosander) (Mergus merganser), French Creek, British Columbia, Canada, North America

An adult common potoo (Nyctibius griseus) sleeping during the day at Playa Blanca, Costa Rica, Central America

Common Raven (Corvus corax), Bryce Canyon National Park, Utah, United States of America, North America

Common redshank (Tringa totanus) flying over a marshland pool, Gloucestershire, England, United Kingdom, Europe

An adult common murre (Uria aalge), taking flight at St. Lazaria Island, Sitka Sound, Southeast Alaska, United States of America, North America

Common ostrich (Struthio camelus) male watching chicks, Masai Mara National Reserve, Kenya, East Africa, Africa

Common snipe (Gallinago gallinago), Arapaho National Wildlife Refuge, Colorado, United States of America, North America

Reintroduced common crane (Eurasian crane) (Grus grus) panting in hot weather while standing on her nest in a sedge marsh, Gloucestershire, England, United Kingdom, Europe

Common eland (Taurotragus oryx) with red-billed oxpecker (Buphagus erythrorhynchus), Masai Mara National Reserve, Kenya, East Africa, Africa

Fiscal shrike (common fiscal) (Lanius collaris), Addo Elephant National Park, South Africa, Africa

Common murres (Uria aalge), gathering at St. Lazaria Island, Sitka Sound, Southeast Alaska, United States of America, North America

Adult common guillemot (Uria aalge) taking flight at nesting site on the cliffs at Bjornoya, Svalbard, Norway, Europe

Adult common eider ducks (Somateria mollissima), gathered on the shoreline on the island of Bjornoya, Norway, Scandinavia, Europe

Common snipe (Gallinago gallinago), Arapaho National Wildlife Refuge, Colorado, United States of America, North America

Female common redpoll (Carduelis flammea), Archangel Pass, Alaska, United States of America, North America

Adult common guillemot (Uria aalge) taking flight at nesting site on the cliffs at Bjornoya, Svalbard, Norway, Europe

Fiscal shrike (common fiscal) (Lanius collaris), Addo Elephant National Park, South Africa, Africa

Common white-tern (Gygis alba), Denis Island, Seychelles, Indian Ocean, Africa

Fiscal Shrike (Common Fiscal) (Lanius collaris), Addo Elephant National Park, South Africa, Africa

Common myna bird, Acridotheres tristis, in Ranthambhore National Park, Rajasthan, Northern India

A bird resting on the back of a Common Plains Zebra (Grant's), Ngorongoro Crater, Tanzania

Great White Egret, Ardea alba, also known as the Great Egret or Common Egret in the Everglades, Florida, USA

Great Egret, Ardea alba, also known as the Great White Egret or Common Egret on Anna Maria, Island, Florida, USA

Great White Egret, Ardea alba, also known as the Great Egret or Common Egret in the Everglades, Florida, USA

Great White Egret, Ardea alba, also known as the Great Egret or Common Egret on Anna Maria, Island, Florida, USA

Common Babbler bird on fencepost at Chattra Sagar nature reserve at Nimaj, Rajasthan, Northern India

Common or ring-necked pheasant (phasianus colchicus) male standing on frosty ground, oxfordshire, uk

Common or ring-necked pheasant (phasianus colchicus) male searching for food amongst grass, oxfordshire, uk

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

Common or ring-necked pheasant (phasianus colchicus) male covered in snow, oxfordshire, uk

Common or ring-necked pheasant (phasianus colchicus) male looking for food on frosty ground, oxfordshire, uk

Common troupial oriole (icterus icterus) on tree branch looking for food, pantanal, brazil

A Common Starling, Sternus vulgaris in Seahouses, Northumberland, UK.

Common goldeneye (Bucephala clangula) at Martin Mere, a Wildfowl and Wetlands Trust bird reserve near Southport, Lancashire, England, United Kingdom, Europe

Common or ring-necked pheasant (phasianus colchicus) male looking for food amongst grass, oxfordshire, uk

Common pheasant (phasianus colchicus) oxfordshire, uk, female in buttercup field.

Common or ring-necked pheasant (phasianus colchicus) male walking on grass, oxfordshire, uk

Common pheasant (phasianus colchicus) adult male drinking water, oxfordshire, uk

Common ring-necked pheasant (phasianus colchicus) male standing in snow, oxfordshire, uk

Common or ring-necked pheasant (phasianus colchicus) male looking for food amongst grass, oxfordshire, uk

Common troupial oriole (icterus icterus) on branch, pantanal, brazil.

Common troupial (icterus icterus) perched amongst vegetation, pantanal, brazil.

Common buzzard, Buteo buteo, captive female on post amongst foxgloves, Scotland, UK

Adult male common eider duck (Somateria mollissima) in breeding plumage in the Svalbard Archipelago in the Barents Sea, Norway

Adult male common eider duck (Somateria mollissima) in breeding plumage in the Svalbard Archipelago in the Barents Sea, Norway

Long-beaked common dolphin pod (Delphinus capensis) bow riding the National Geographic Sea Bird, southern Gulf of California (Sea of Cortez), Baja California Sur, Mexico

Common Tern (Sterna hirundo) shaking water off wings in mid air after diving for fish. Oban, Argyll, Scotland, UK

Adult Southern Rockhopper Penguins (Eudyptes chrysocome chrysocome) in the Falkland Islands. This is the smallest yellow-crested, black-and-white penguin in the genus Eudyptes. It reaches a length of 45-58 cm (18-23 in) and typically weighs 2-3.4 kg (4.4-7.5 lb), although there are records of exceptionally large rockhoppers weighing 5 kg (11 lbs). Their common name refers to the fact that unlike many other penguins which negotiate obstacles by sliding on their bellies or by awkward climbing using their flipper-like wings as aid, Rockhoppers will try to jump over boulders and across cracks. This behavior is by no means unique to this species however - at least the other "crested" penguins of the genus Eudyptes hop around rocks too. Southern Rockhopper Penguins have a global population of roughly 1 million pairs, perhaps a bit more. About two-thirds of the global population belongs to E. c. chrysocome which breeds on the Falkland Islands and on islands off Argentina and southern Chile. The Southern Rockhopper Penguin is classified as Vulnerable species by the IUCN.

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway

Adult male common eider duck (Somateria mollissima) in breeding plumage in the Svalbard Archipelago in the Barents Sea, Norway

Wild Common Murres (Uria aalge) male and feamle, colony, hundreds of thousands, Tyuleniy Island (Bering Sea), Russia, Asia

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway

Wild Common Murres (Uria aalge) male and feamle, colony, hundreds of thousands, Tyuleniy Island (Bering Sea), Russia, Asia

Common or Eurasian crane (Grus grus) flocks flying from roost site at sunrise, silhouetted against dawn sky, autumn migration period, Rugen-Bock-Region, Mecklenburg-Vorpommern, Germany.

Adult male common merganser (Mergus merganser) in breeding plumage taking flight in Gambier Bay on Admiralty Island, Southeastern Alaska, USA

Adult common teal (Anas crecca) in full breeding plumage in the calm waters of Lake Myvatn, Iceland

Common tern (Sterna hirundo) displaying. UK (RR)

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway

Common Murres (Uria aalge). Tyuleniy Island, Kuril Islands, Russia

Common Tern displaying (Sterna hirundo) Jersey, British Isles

Common Tern (Sterna hirundo) flying in Oban town centre while fishing with fish in mouth. Oban, Argyll, Scotland, UK

Common or Eurasian crane flock (Grus grus) flying close to wind farm and natural gas plant, autumn, near Diepholz, Lower Saxony, Germany.

Adult female common merganser (Mergus merganser) in breeding plumage in Gambier Bay on Admiralty Island, Southeastern Alaska, USA. Pacific Ocean.

Common Tern (Sterna hirundo) flying in Oban town centre while fishing, just after emerging from a fishing dive. Oban, Argyll, Scotland, UK (rr).

Common Murre (Uria aalge). Longyearbyen, Svalbard, Norway

Common or Eurasian cranes (Grus grus) family of 3 flying from roost at dawn, silhouetted against sky, autumn migration period, Rugen-Bock-Region, Mecklenburg-Vorpommern, Germany.

Common Loon (Gavia immer) feeding on the oceans surface at Puerto Don Juan in the middle Gulf of California (Sea of Cortez), Mexico.

Common guillemot (Uria aalge) along the northern coast of Norway

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway

Common Tern chick (Sterna hirundo), Jersey, British Isles

Common or Eurasian crane (Grus grus) flock flying close to wind turbine, near Diepholz, Lower Saxony, Germany.

Common Gull (Larus canus) foraging in water and taking off. Oban, Argyll, Scotland, UK

Common Tern (Sterna hirundo) emerging from water after a fishing dive. Oban, Argyll. Scotland, UK

Common Tern (Sterna hirundo) flying with fish in mouth in Oban town centre while fishing. Oban, Argyll, Scotland, UK

Common buzzard

Long-beaked common dolphin pod (Delphinus capensis) bow riding the National Geographic Sea Bird, southern Gulf of California (Sea of Cortez), Baja California Sur, Mexico

Common Tern (Sterna hirundo) flying in Oban town centre while fishing, just after emerging from water after a fishing dive. Oban, Argyll, Scotland, UK

Adult common moorhens (Gallinula chloropus) wading and feeding near San Jose Del Cabo in the Gulf of California (Sea of Cortez), Baja California Sur, Mexico.

Adult common moorhen (Gallinula chloropus) wading and feeding near San Jose Del Cabo in the Gulf of California (Sea of Cortez), Baja California Sur, Mexico.

common sandpiper: tringa hypoleucos, in marshland tartumaa, estonia

Common Tern (Sterna hirundo) flying with fish in mouth in Oban town centre while fishing. Oban, Argyll, Scotland, UK

Long-beaked common dolphin pod (Delphinus capensis) bow riding the National Geographic Sea Bird, southern Gulf of California (Sea of Cortez), Baja California Sur, Mexico

Common Tern (Sterna hirundo) , Jersey, British Isles

Adult male and female common mergansers (Mergus merganser) in breeding plumage in Gambier Bay on Admiralty Island, Southeastern Alaska, USA

Common guillemot (Uria aalge) nesting near the Fuglefjellet cliffs (411m) on Bear Island in the Svalbard Archipeligo, Barents Sea, Norway