Winfried Wisniewski / European Bee-eater (Merops apiaster) pair, Pleven, Bulgaria
Claudio Contreras / Laysan albatross (Phoebastria immutabilis) calling mate,Guadalupe Island Biosphere Reserve, off the coast of Baja California, Mexico, March
Will Burrard-Lucas / A mating pair of leopards (Panthera pardus) caught in front of a camera trap at night, Laikipia Wilderness Camp, Kenya. Photographed with a camera trap. EDITORIAL USE ONLY. All other uses require clea...
Alex Mustard / Saddleback anemonefish (Amphiprion polymnus) barks a warning as it guards a clutch of developing eggs (beneath it) laid on a small stone, below a fold in its home, a Haddon's sea anemone (Stichoda...
Brian Bevan / Male European cuckoo (Cuculus canorus) calling to another male from branch, flies off, Bedfordshire, England, UK, May.
Brian Bevan / Male European cuckoo (Cuculus canorus) calling to another male, before flying off in response to a female, Bedfordshire, England, UK, May.
Konrad Wothe / Macgregor's bowerbird (Amblyornis macgregoriae) singing in rainforest, Papua New Guinea.
Ross Hoddinott / Wren (Troglodytes troglodytes) singing, early morning in spring, Broxwater, Cornwall, UK. April.
Marie Read / Red-winged Blackbird (Agelaius phoenicus) male singing from snow-covered red maple (Acer rubrum) in flower, Ithaca, New York, USA. April 2020.
Danny Green / Red deer stag (Cervus elaphus) roaring. Bradgate Park, Leicestershire, UK, October.
Erlend Haarberg / Black grouse (Lyrurus tetrix), male calling early in the morning, Norway. May.
Markus Varesvuo / Red-throated Diver (Gavia stellata) calling, Iceland, June.