1112-11830 - Adult arctic tern (Sterna paradisaea) male bringing female a fish, Spitsbergen Island in the Svalbard Archipelago, Norway

1112-11748 - Adult brown bears (Ursus arctos) courtship behaviour, Brooks River, Katmai National Park near Bristol Bay, Alaska, United States of America

1200-698 - Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

1112-10790 - Adult chinstrap penguins (Pygoscelis antarctica) mating at Baily Head on Deception Island, Antarctica, Southern Ocean, Polar Regions

1112-10039 - Blue-footed booby (Sula nebouxii) courtship behavior in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-10038 - Blue-footed booby (Sula nebouxii) courtship behavior in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-10015 - Adult Nazca booby (Sula grantii) pair in courtship in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9977 - Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on Genovesa (Tower) Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

1112-9974 - Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on North Seymour Island, Galapagos Islands, UNESCO World Heritage Site, Ecaudor, South America

1112-9876 - Lava lizard (Microlophus spp) courtship behavior in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9872 - Lava lizard (Microlophus spp) courtship behavior in the Galapagos Islands Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9837 - Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on Genovesa (Tower) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

1112-9518 - Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

1112-9517 - Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

1112-9514 - Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

1112-9513 - Southern elephant seal (Mirounga leonina) bull holding adult female in the surf to mate with her, South Georgia, Polar Regions

1112-9470 - Beachmaster bull southern elephant seal (Mirounga leonina) attempting to mate at Peggotty Bluff, South Georgia, Polar Regions

1112-9440 - Adult king penguin (Aptenodytes patagonicus) amongst chicks at breeding colony at Gold Harbour, South Georgia Island, Polar Regions

1112-9414 - Rock shag (Phalacrocorax magellanicus), pair exhibiting courtship behavior near New Island in the Falkland Islands, South America

1112-9396 - Adult black-browed albatross (Thalassarche melanophrys), pair in courtship display at nesting site on New Island, Falklands, South America

1112-9393 - Adult black-browed albatross (Thalassarche melanophrys), pair in courtship display at nesting site on New Island, Falklands, South America

1112-9379 - Imperial Shag (Phalacrocorax atriceps), pair exhibiting courtship behavior on New Island in the Falkland Islands, South America

1112-9305 - Adult gentoo penguin (Pygoscelis papua), mating at Booth Island, Antarctica, Southern Ocean, Polar Regions

1112-9268 - Chinstrap penguins (Pygoscelis antarctica), ecstatic display at breeding colony at Half Moon Island, Antarctica, Polar Regions

1320-219 - Gentoo penguins (Pygoscelis Papua), performing a mating ritual in the Antarctic peninsula, Antarctica, Polar Regions

832-396793 - Northern gannet (Morus bassanus), courtship and welcoming ritual on return of mate, Helgoland, Schleswig-Holstein, Germany, Europe

860-288808 - Ritual of mating of Great crested Grebe (Podiceps cristatus) in in early spring, Fernan Caballero, Ciudad Real, Spain

860-288824 - Ritual of mating of Great crested Grebe (Podiceps cristatus) in in early spring, Fernan Caballero, Ciudad Real, Spain

1116-46660 - A Pair Of Bald Eagles (Haliaeetus Leucocephalus) That Are Likely Mates Do A Bonding Ritual Of Flying Together And Touching Or Locking Talons Together And Then Tumbling Down Through The Air, South-Central Alaska, Alaska, United States Of America

1116-43524 - Peacock In Full Display Mode Attempting To Attract A Mate, Santa Cruz, Bolivia

1161-2912 - Bull nuzzles up to cows, Hazleton, Gloucestershire, The Cotswolds, England, United Kingdom

908-178 - Cuttlefishes (Sepia officinalis) Mating. Babbacombe, Torquay, South Devon, UK (RR)

995-34 - Black Guillemot (Cepphus grylle) circling in a paring/mating ritual in the middle of Oban Bay with boats in the background. Black Guillemots nest in drains and holes in the sea wall in the middle of Oban town centre. Argyll, Scotland, UK

979-1940 - Heermann's Gull (Larus heermanni) mating ritual on their breeding grounds on Isla Rasa in the middle Gulf of California (Sea of Cortez), Mexico

979-1942 - Heermann's Gull (Larus heermanni) mating ritual on their breeding grounds on Isla Rasa in the middle Gulf of California (Sea of Cortez), Mexico

979-1783 - Black-browed Albatross (Thalassarche melanophrys) mating ritual in the Falkland Islands.

979-1939 - Heermann's Gull (Larus heermanni) mating ritual on their breeding grounds on Isla Rasa in the middle Gulf of California (Sea of Cortez), Mexico

979-1941 - Heermann's Gull (Larus heermanni) mating ritual on their breeding grounds on Isla Rasa in the middle Gulf of California (Sea of Cortez), Mexico

920-464 - Green Sea Turtle (Chelonia mydas) mating ritual, Kaneohe Bay, Oahu, Hawaii, United States of America, Pacific

920-465 - Green Sea Turtle (Chelonia mydas) mating ritual, Kaneohe Bay, Oahu, Hawaii, United States of America, Pacific

718-978 - King penguins (Aptenodytes patagonicus) in mating ritual, Volunteer Point, East Falkland, Falkland Islands, South Atlantic, South America