Tui De Roy / Waved Albatross (Phoebastria irrorata) courtship dance under rainy season clouds, Punta Cevallos, Espanola Island, Galapagos Islands, Ecuador

Konrad Wothe / Red-crowned Crane (Grus japonensis) pair calling and jumping during courtship, Hokkaido, Japan

Pete Oxford / Chagra cowboy portrait with roses in his hat band, on an overnight ride at a hacienda to herd cattle, Andes Mountains, Ecuador

Patricio Robles Gil / Aboriginal man with his face painted for the Mt Hagen cultural show, Papua New Guinea

Patricio Robles Gil / Aboriginal man wearing tribal headdress costume for the Mt Hagen cultural show, Papua New Guinea

Patricio Robles Gil / Aboriginal man wearing tribal headdress made with feathers from Bird-of-Paradise, Parrots and Lorikeets, Papua New Guinea

Tui De Roy / Antipodean Albatross (Diomedea antipodensis) courtship display often pirouetting with outstretched wings, Adams Island, Auckland's Group, New Zealand

Tui De Roy / Blue-footed Booby (Sula nebouxii) pair performing courtship dance, Seymour Island, Galapagos Islands, Ecuador

Tui De Roy / Great Frigatebird (Fregata minor) courting males vying for female's attention, Genovesa Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Great Frigatebird (Fregata minor) recently formed pair, female inspecting male in courtship display with extended gular pouch, Genovesa Tower Island, Galapagos Islands, Ecuador

Mitsuaki Iwago / Siberian Crane (Grus leucogeranus) pair courting in front of setting sun, China

Tui De Roy / Blue-footed Booby (Sula nebouxii) pair performing courtship dance, Seymour Island, Galapagos Islands, Ecuador