832-390420 - Two Mute swan (cygnus olor), courting, animal portrait, Germany, Europe

764-469 - King penguin (Aptenodytes patagonica) pair pre-mating behaviour, Salisbury Plain, South Georgia, Polar Regions

1241-236 - Wild male plains bison courts a female during the mating season, Elk Island National Park, Alberta, Canada, North America

1112-5192 - Wandering albatross (Diomedea exulans) trio in courtship display on Prion Island, Bay of Isles, South Georgia, Polar Regions

1112-5154 - Adult light-mantled albatross pair (Phoebetria palpebrata) in courtship flight over Prion Island, South Georgia, Polar Regions

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

1116-42915 - Brown Bear (Ursus Arctos) Male And Female Courting Prior To Mating, Sitting On Boulder In Brooks River, Katmai National Park And Preserve, Alaska, United States Of America

832-381745 - African Lions ( Panthera leo), adult male and female, courtship behavior, Etosha National Park, Namibia, Africa

832-379345 - Great Crested Grebes (Podiceps cristatus) doing a mating dance, Canton of Vaud, Switzerland, Europe

832-379381 - Black grouse, also blackgame or blackcock (Lyrurus tetrix) courting males in fighting stance, Hedmark, Norway, Europe

832-379384 - Black grouse, also blackgame or blackcock (Lyrurus tetrix) courting male, Hedmark, Norway, Europe

832-379382 - Black grouse, also blackgame or blackcock (Lyrurus tetrix) courting male, Hedmark, Norway, Europe

832-379385 - Black grouse, also blackgame or blackcock (Lyrurus tetrix) courting male, Hedmark, Norway, Europe

832-378947 - Bee-eater (Merops apiaster), couple with bridal present, Saxony-Anhalt, Germany, Europe

832-379313 - Ruff (Philomachus pugnax) in nuptial plumage, courtship, Varanger Peninsula, Norway, Europe

832-379314 - Ruff (Philomachus pugnax) in nuptial plumage, courtship, Varanger Peninsula, Norway, Europe

746-88442 - Wandering Albatross (Diomendea exulans) in courtship behaviour, Island of South Georgia

1172-2348 - Indian Peafowl, (Pavo cristatus), albino, adult male courtship, Cuddly Creek, South Australia, Australia

1178-22280 - Couple eating in restaurant

1178-21499 - Couple taking own photograph

1178-22278 - Couple drinking wine in restaurant

1178-21472 - Couple smiling at each other on rock formation

1178-21548 - Couple in desert at dusk

1178-21585 - Couple wearing rappelling gear

1178-21437 - Couple in ski gear hugging

1178-21436 - Couple on ski lift

1178-22277 - Couple drinking wine in restaurant

1178-22279 - Couple eating in restaurant

1178-2633 - Couple wrapped in beach towel

1178-2631 - Couple wearing snorkeling gear

1178-2742 - Couple holding Christmas gift

1178-2638 - Low angle view of couple with arms outstretched

1178-2570 - Couple drinking martinis

1178-2596 - Couple drinking martinis

1178-2729 - Couple in bathrobes hugging

1178-2834 - Couple smiling with golden statue in background

1178-2741 - Portrait of couple holding Christmas gift

1178-2743 - Senior couple holding Christmas gift

1178-2618 - Couple hugging in grass

1178-2568 - Reserved sign at place setting

1178-2619 - Couple smiling at each other

1178-2195 - Couple walking with Eiffel Tower in background

983-595 - humpback whales, Megaptera novaeangliae, courtship behavior, heat run or mating contest - competing male whales battle each other blowing bubbles aggressively possibly to gain access to a female as wellas to fend off other males, Hawaii, Pacific Ocean

1112-2522 - Courting pair of long-tailed ducks (Clangula hyemalis), Bellsund, Spitsbergen, Svalbard, Arctic, Norway, Scandinavia, Europe

832-370975 - Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

832-372946 - Natterjack toad (Bufo calamita), male calling, Thuringia, Germany, Europe

832-374888 - King penguins (Aptenodytes patagonicus), St. Andrews Bay, South Georgia, sub-Antarctic and Antarctic

832-372948 - Natterjack toad (Bufo calamita), male calling, Thuringia, Germany, Europe

832-374474 - Kori Bustard (Ardeotis kori), male, in courtship display in Ndutu, Ngorongoro, Tanzania, Africa

832-370977 - Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan

832-367792 - Great Egret or Great White Egret (Casmerodius albus, Egretta alba), displaying on the nest, Florida, USA

832-374891 - King penguins (Aptenodytes patagonicus), pair in courtship, Gold Harbour, South Georgia, Antarctica

832-370976 - Farmland Green Tree Frog (Rhacophorus arvalis), inflated vocal sac, courtship display, species endemic to Taiwan, Asia

832-372947 - Natterjack toad (Bufo calamita), male calling, Thuringia, Germany, Europe

832-370120 - Green iguana (Iguana iguana), male demonstrating his mating coloration trying to attract females, Cano Negro National Refuge, Costa Rica, Central America

1174-1191 - Black-footed albatrosses, Phoebastria nigripes, in a courting display on the beach at Tern Island, Hawaiian Leeward Islands, Tern Island, Hawaiian Leeward Islands

1174-1231 - King penguins, Aptenodytes patagonicus, gathered in a group looking up in a courting display, on the Falkland Islands, Falkland Islands

1174-1188 - King penguins, Aptenodytes patagonicus lined up in a courting procession or display on the Falkland Islands, Falkland Islands

1174-1314 - King penguins courting, Aptenodytes patagonicus, South Georgia Island, South Georgia Island

1174-1315 - King penguins courting, Aptenodytes patagonicus, South Georgia Island, South Georgia Island

1173-2181 - Campbell Island Black-browed albatrosses courting, Thalassarche impavida, Campbell Island, New Zealand

1173-3232 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-1462 - Black-browed albatrosses courting, Thalassarche melanophrys, South Georgia Island

1173-539 - King penguins courting, Aptenodytes patagonicus, South Georgia Island

1173-544 - Laysan albatrosses courting, Phoebastria immutabilis, Hawaiian Leeward Islands

1173-3077 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-3068 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-534 - King penguins courting, Aptenodytes patagonicus, South Georgia Island

1173-1573 - Black-browed albatrosses courting, Thalassarche melanophrys, South Georgia Island

1173-2999 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-2182 - Southern royal albatrosses courting, Diomedea epomophora, Campbell Island, New Zealand

1173-3069 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-533 - King penguins courting, Aptenodytes patagonicus, South Georgia Island

1173-3268 - Wandering albatrosses courting, Diomedea exulans, Prion Island, South Georgia Island

1173-528 - King penguins courting, Aptenodytes patagonicus, South Georgia Island

1173-4470 - Magnificent frigate birds courting, Fregata magnificens, Galapagos Islands

1173-556 - Laysan albatrosses courting, Phoebastria immutabilis, Hawaiian Leeward Islands

1173-3079 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-549 - Laysan albatrosses courting, Phoebastria immutabilis, Hawaiian Leeward Islands

1173-3695 - Masked boobies courting, Sula dactylatra, Galapagos Islands

1173-1467 - Wandering albatrosses, Diomedea exulans, courting and displaying on South Georgia Island.

1173-3080 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-3075 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-1691 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-1308 - Wandering albatrosses courting, Diomedea exulans, South Georgia Island

1173-4224 - Royal albatrosses courting, Diomedea epomophora, Otago Peninsula, New Zealand

1173-3234 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-2099 - Black-browed albatrosses courting at edge of colony, Thalassarche melanophrys, Steeple Jason Island, Falkland Islands

1173-3076 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-1858 - Wandering albatross pair courting, Diomedea exulans, South Georgia Island

1173-1551 - Black-browed albatrosses courting, Thalassarche melanophrys, Falkland Islands

1173-3072 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-2025 - Black-footed albatrosses courting, Phoebastria nigripes, Tern Island, Hawaiian Leeward Islands

1173-3235 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-543 - Laysan albatrosses courting, Phoebastria immutabilis, Hawaiian Leeward Islands

1173-517 - King penguins courting, Aptenodytes patagonicus, Falkland Islands

1173-2668 - Wandering albatrosses courting, Diomedea exulans, South Georgia Island

1173-2669 - Wandering albatrosses courting, Diomedea exulans, South Georgia Island

1173-2024 - Black-footed albatrosses courting, Phoebastria nigripes, Tern Island, Hawaiian Leeward Islands

1173-4157 - Waved albatrosses courting, Phoebastria irrorata, Espanola Island, Galapagos Islands