RM2R112KM–Baltimore oriole (Icterus galbula) males fighting during spring migration, Galveston, Texas, USA.
RFEH3K6W–Blue-tailed Damselfly (Ischnura elegans), two males, Burgenland, Austria
RM2F78BW7–Flight to Egypt, Joseph, Mary, baby Jesus escape slaughter of new born males, stained glass window, Gunthorpe, Norfolk, England
RMRP5B98–Common Frog, Rana temporaria, many males waiting on frog spawn in breeding pond for females to arrive for spawning, February, garden
RF2A38HPC–A Young Asian Boy Thinking
RMR9FBRN–Pheasant; Phasianus colchicus Two Males Cornwall; UK
RM2C65XBM–Rivals Stag beetle (Lucanus cervus) two males displaying aggressive behaviour on oak tree branch, Biosphere Reserve 'Niedersächsische Elbtalaue' / Lower Saxonian Elbe Valley, Germany
RMFH49XD–Eurasian teals / common teal (Anas crecca) two males swimming in ice-hole in pond in winter
RMEWM4WG–Males playing bowls on a Crown Bowling Green, the match was played in Queens Park, Bolton, Lancashire, Greater Manchester, England UK. photo DON TONGE
RMG3N8YH–North American Ruddy Ducks (Oxyura jamaicensis jamaicensis). Males.
RF2K874CX–A small pod of beluga whales (Delphinapterus leucas), consisting of several males and one lone female mating, Svalbard, Norway, Europe
RM2RCMM5E–Flight to Egypt, Joseph, Mary, baby Jesus, escape slaughter of new born males, stained glass window, by Frederick Preedy, 1865, Gunthorpe, Norfolk
RMRP5B6C–Common Frog, Rana temporaria, one pair, male and female among many males waiting on frog spawn for females to arrive for spawning,
RF2A396R1–A Confused Young Asian Boy
RM2JNWYF2–Smew; Mergus albellus; Two Males with Female; UK
RM2C65XGD–Rivals Stag beetle (Lucanus cervus) two males displaying aggressive behaviour on oak tree branch, Biosphere Reserve 'Niedersächsische Elbtalaue' / Lower Saxonian Elbe Valley, Germany
RMH3HFY7–Christmas Island red crab (Gecarcoidea natalis)
RMFAEHB3–Two males having a game of chess which is being played outdoors in a public space
RM2D21J5J–Radiated Tortoises (Astrochelys radiata). Males, adults, rival, combative males. About to use gular, the two frontmost, plastron, laminae, to ram and
RF2C2XCGG–Multi-ethnic males holding surfboards on the beach
RM2R3FHMA–Flight to Egypt, Joseph, Mary, baby Jesus, escape slaughter of new born males, stained glass window, by Frederick Preedy, 1865, Gunthorpe, Norfolk
RMRP5B44–Common Frog, Rana temporaria, one pair, male and female among many males waiting on frog spawn for females to arrive for spawning,
RMFBYRP5–Aerial view, Ruin males Castle in the snow, Winter, Snow, Arnsberg, Sauerland, North Rhine-Westphalia, Germany, Europe, Aerial
RMKGK65Y–Mallard; Anas platyrhynchos Two; Males Fighting Cornwall; UK
RM2C65XCD–Sequence 4/6 - Rivals Stag beetle (Lucanus cervus) two males displaying aggressive behaviour on oak tree branch, Biosphere Reserve 'Niedersächsische Elbtalaue' / Lower Saxonian Elbe Valley, Germany
RMH3JRD4–Christmas Island red crab (Gecarcoidea natalis)
RMFAEGE2–Two males having a game of chess which is being played outdoors in a public space
RM2E4K8DR–Impala (Aepyceros melampus). Younger males in conflict. Head to head, horns interlocked, testing, physical, mental, determination, for dominance.
RFM5REY8–Common darter, young males, Sympetrum striolatum
RFEXWT67–Two red deer males on a meadow
RMFJ6F2C–Elephant Seal (Mirounga leonina) adult males fighting Saint Andrews Bay, South Georgia
RMF11T3X–Greater Kudu (Tragelaphus strepsiceros) Two males at waterhole Botswana
RMM4BEND–Northern Goshawk, the females are significantly larger than males
RFKPYRC1–Black tailed Skimmer, 3 males perched on a rock,
RMFA7BP1–Red ant Myrmica rubra emergence in garden on a hot August day - winged males, Queens and workers. Dorset
RMM3R16G–Males American bison (Bison bison) fighting on snow, Neal Smith National Wildlife Refuge, Iowa, USA
RFRY7A80–Labrador Retriever, yellow, males, standing on rocks, Austria
RM2GEME18–Flight to Egypt, Joseph, Mary, baby Jesus, escape slaughter of new born males, stained glass window, by Frederick Preedy, 1865, Gunthorpe, Norfolk
RMRP5ATG–Common Frog, Rana temporaria, many males waiting on frog spawn in breeding pond for females to arrive for spawning, February, garden pond
RMFBYRP2–Aerial view, Ruin males Castle in the snow, Winter, Snow, Arnsberg, Sauerland, North Rhine-Westphalia, Germany, Europe, Aerial
RMM6MFMN–Mallard; Anas platyrhynchos Two; Males Fighting Cornwall; UK
RFT4FAKP–Northern lapwing males fighting in air at spring in fields
RMH3HFY9–Christmas Island red crab (Gecarcoidea natalis)