John Cancalosi / American toads (Anaxyrus americanus), several males competing to mate with female, Maryland, USA, April.
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John Cancalosi / American toads (Anaxyrus americanus), several males trying to mate with female, Maryland, USA, April.
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John Cancalosi / American toads (Anaxyrus americanus), two males attempting to mate with female, Maryland, USA, April.
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John Cancalosi / American toads (Anaxyrus americanus), males competing to mate with female, Maryland, USA, April.
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Joel Sartore / Photo Ark / Eurasian blue tit (Cyanistes caeruleus) juveniles calling, Cheshire Animals, Churton, UK. Controlled conditions.
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Eric Baccega / Black breasted snake eagle (Circaetus pectoralis) perched on branch and looking around before taking flight and leaving frame, Masai Mara, Kenya.
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Eric Baccega / Eastern white-bearded wildebeest (Connochaetes taurinus) jumping down cliff on bank of Mara River during migration, Masai Mara Game Reserve, Kenya.
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Harry Collins / Elk (Cervus canadensis) bull bugling during the rut, Jasper National Park, Canada. September.
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Andy Sands / Red mason bee (Osmia bicornis) pair courting. The male is standing on the back of a female. The male performs this behaviour to try and persuade the female to mate. Hertfordshire, England, UK. May.
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Andres M. Dominguez / Eurasian jay (Garrulus glandarius) bathing in stagnant water. The animal flies off and out of the frame. Sierra de Grazalema Natural Park, Spain. May.
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Andres M. Dominguez / Blue tit (Cyanistes caeruleus) bathing in a river before hopping onto a nearby branch and then leaving the frame, Sierra de Grazalema Natural Park, Spain. July.
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Konrad Wothe / Chimpanzee (Pan troglodytes) sitting on a branch and looking around in the rain, Mahale Mountains National Park, Tanzania.
