71010679 - Sage Grouse (Centrocercus urophasianus) male, Mono County, California71009315 - Indian Peafowl (Pavo cristatus) male displaying tail feathers, native to Asia71008037 - Superb Lyrebird (Menura novaehollandiae) male singing from perch, Sherbrooke Forest Park, Victoria, Australia71007804 - Ruff (Philomachus pugnax) male in breeding plumage at lek, Varanger Peninsula, Norway71007313 - Great Egret (Ardea alba) displaying during courtship in breeding plumage, Florida71007160 - Wilson's Bird-of-paradise (Cicinnurus respublica) male displaying to female, Papua New Guinea71006884 - Ruddy Duck (Oxyura jamaicensis) male displaying, J. Clark Salyer National Wildlife Refuge, North Dakota71006650 - Victoria's Riflebird (Ptiloris victoriae) male displaying for female on vine lek, Malanda, Queensland, Australia71006072 - Buff-tailed Coronet (Boissonneaua flavescens) hummingbird pair courting, Bellavista Cloud Forest Reserve, Tandayapa Valley, Ecuador71005530 - Blue and Yellow Macaw (Ara ararauna) pair billing, South America71005528 - Eclectus Parrot (Eclectus roratus) pair courting, female on right and male on left, Cape York Peninsula, North Queensland, Queensland, Australia71005080 - African Lion (Panthera leo) male and female courting, Khutse Game Reserve, Botswana71005032 - Northern Gannet (Sula bassana) pair preening, Helgoland, Germany71003923 - Sarus Crane (Grus antigone) pair courting, Agra, India71009148 - Rothschild Giraffe (Giraffa camelopardalis rothschildi) pair courting, native to Africa71008932 - Black-winged Stilt (Himantopus himantopus) pair courting, Florence, Italy71007895 - Red and Green Macaw (Ara chloroptera) pair courting, Buraco das Araras, Mato Grosso do Sul, Pantanal, Brazil71007631 - Sage Grouse (Centrocercus urophasianus) male displaying, UL Bend National Wildlife Refuge, north-central Montana, Sequence 2 of 471007517 - King Penguin (Aptenodytes patagonicus) pair courting, St Andrew's Bay, South Georgia Island71006651 - Victoria's Riflebird (Ptiloris victoriae) male displaying for female on vine lek, Malanda, Queensland, Australia71006306 - Golden-headed Manakin (Pipra erythrocephala) female courting male, Sierra Nevada de Santa Marta, Colombia71005782 - Ruffed Grouse (Bonasa umbellus) male drumming, Kenora, Ontario, Canada71005148 - Black Grouse (Tetrao tetrix) male displaying at lek, Sweden71005081 - African Lion (Panthera leo) male and female courting, Khutse Game Reserve, Botswana71004309 - Blue-footed Booby (Sula nebouxii) in sky-pointing courtship display, Galapagos Islands, Ecuador71003809 - Sage Grouse (Centrocercus urophasianus) male displaying on lek in April, eastern Montana71003805 - Blue Grouse (Dendragapus obscurus) male displaying, western Montana71003804 - Blue Grouse (Dendragapus obscurus) male displaying, western Montana71003522 - Adelie Penguin (Pygoscelis adeliae) pair courting, Antarctica71007807 - Ruff (Philomachus pugnax) males fighting at lek, Varanger Peninsula,Norway71007634 - Magnificent Frigatebird (Fregata magnificens) displaying male with inflated gular air pounch and female at nest site, Sian Ka'an Biosphere Reserve, Mexico71007082 - Blue-footed Booby (Sula nebouxii) pair courting, Galapagos Islands, Ecuador71006648 - Victoria's Riflebird (Ptiloris victoriae) male displaying on his vine lek to attract females, Malanda, Queensland, Australia71006305 - Golden-headed Manakin (Pipra erythrocephala) female courting male, Sierra Nevada de Santa Marta, Colombia71005146 - Black Grouse (Tetrao tetrix) male displaying at lek, Sweden71103181 - Bengal Tiger (Pantera tigris tigris) couple, male and female, in courtship for mating, Ranthambhore national park, Rajastan, India.71096738 - Blue-footed Booby (Sula nebouxii) Courtship ritual, courting, Galapagos Islands National Park, San Cristobal, Lobos Island, Ecuador.71009683 - Domestic Turkey (Meleagris gallopavo) displaying, Anholt, Germany71009316 - Indian Peafowl (Pavo cristatus) male displaying tail feathers, native to Asia71007858 - Ruff (Philomachus pugnax) males fighting at lek, Varanger Peninsula, Norway71005144 - Black Grouse (Tetrao tetrix) male displaying at lek, Sweden71004305 - Blue-footed Booby (Sula nebouxii) male performing foot-lifting courtship display, Galapagos Islands, Ecuador70905278 - humpback whales, Megaptera novaeangliae, displaying courtship behavior - male aggressively pursuits female while blowing bubbles vigorously, Hawaii, USA, Pacific Ocean71103195 - Two Japanese red-crowned cranes (Grus japonensis) displaying courtship in snow, Akan, Hokkaido, Japan.71096737 - Blue-footed Booby (Sula nebouxii) Courtship ritual, courting, Galapagos Islands National Park, San Cristobal, Lobos Island, Ecuador.71096736 - Blue-footed Booby (Sula nebouxii), Galapagos Islands National Park, North Seymore Is. , Ecuador.71010678 - Sage Grouse (Centrocercus urophasianus) males displaying for females at lek, Mono County, California71010014 - Northern Gannet (Morus bassanus) pair in courting display, Bass Rock, Scotland, United Kingdom71009688 - White Stork (Ciconia ciconia) pair courting, Lelystad, Netherlands71008040 - Superb Lyrebird (Menura novaehollandiae) male in courtship display, Sherbrooke Forest Park, Victoria, Australia71007811 - Houbara Bustard (Chlamydotis undulata) male displaying, Fuerteventura, Canary Islands71006652 - Victoria's Riflebird (Ptiloris victoriae) male displaying for female on vine lek, Malanda, Queensland, Australia71006649 - Victoria's Riflebird (Ptiloris victoriae) female looks on as the male displays on vine lek, Malanda, Queensland, Australia71006508 - Indian Peafowl (Pavo cristatus) male in displaying, India71005191 - Andean Cock-of-the-rock (Rupicola peruvianus) male displaying at lek, Ecuador71003828 - Sharp-tailed Grouse (Tympanuchus phasianellus) males fighting on lek, eastern Montana71003824 - Ruffed Grouse (Bonasa umbellus) male displaying and drumming in spring from atop large log, western Montana71009691 - White Stork (Ciconia ciconia) pair courting, Lelystad, Netherlands71009687 - White Stork (Ciconia ciconia) pair courting, Lelystad, Netherlands71009118 - 'Humpback Whale (Megaptera novaeangliae) males following female with one male being hit by her tail, Maui, Hawaii - notice must accompany publication; photo obtained under NMFS permit 13846'71008981 - Black-headed Gull (Larus ridibundus) courting pair, Kuhmo, Finland71007632 - Sage Grouse (Centrocercus urophasianus) male displaying, UL Bend National Wildlife Refuge, north-central Montana, Sequence 3 of 471007630 - Sage Grouse (Centrocercus urophasianus) male displaying, UL Bend National Wildlife Refuge, north-central Montana, Sequence 1 of 471007628 - Blue Grouse (Dendragapus obscurus) male displaying, Troy, Montana71005190 - Andean Cock-of-the-rock (Rupicola peruvianus) male displaying at lek, Ecuador71005143 - Black Grouse (Tetrao tetrix) male displaying at lek, Sweden71197964 - Iseo Lake, Lombardy, Italy. Great crested grebe.71227682 - Roseate spoonbill (Ajaia ajaja) Courting pair, Smith Oaks Audubon Rookery, High Island, Texas, USA.71197965 - Iseo Lake, Lombardy, Italy. Great crested grebe.71227683 - Roseate spoonbill (Ajaia ajaja) Courting pair, Smith Oaks Audubon rookery, High Island, Texas, USA.71151000 - Iseo Lake, Lombardy, Italy, Great crested grebe71227681 - Roseate spoonbill (Platalea ajaja) Courtship behaviour in early spring, Smith Oaks Audubon Rookery, High Island, Texas, USA.71155899 - Iseo Lake, Lombardy, Italy, Great crested grebe71155871 - Iseo Lake, Lombardy, Italy, Great crested grebe71155870 - Iseo Lake, Lombardy, Italy, Great crested grebe
