Philippe Clement / Female Common kingfisher (Alcedo atthis) diving and catching a Nine-spined stickleback (Pungitius pungitius) fish, stuns and eats it, Belgium, June.

Philippe Clement / Three Hudson Bay wolf pups (Canis lupus hudsonicus) playing near den, Bavarian Wildlife Forest Park, Germany, June. Captive, native to Canada.

Philippe Clement / Male Great spotted woodpecker (Dendrocopos major) wedging nut into a tree stump crevice before hammering it, Belgium, June.

Philippe Clement / Tracking shot through Beech (Fagus sylvatica) forest, with the sun shining through the foliage, dolly shot, Belgium, April.

Philippe Clement / Blue tit (Cyanistes caeruleus) collecting cotton wool for nest building before flying out of frame, Belgium, April.

Philippe Clement / Wood anemones (Anemone nemorosa) in flower in forest, dolly shot, Belgium, April.

John Cancalosi / Captive corn snake (Pantherophis guttatus) eating an Eastern chipmunk (Eutamias sp.). The chipmunk was found dead and fed to the captive snake. North America.

James Dunbar / Slow motion clip of a Beefly (Bombyliidae sp.) laying eggs by flicking them into the nest of a solitary bee, UK, April.

James Dunbar / Beefly (Bombyliidae sp.) feeding at flower, April, UK

Simon Littlejohn / Two European otters (Lutra lutra) hunting in the River Stour, Dorset, England, UK, May.

Simon Littlejohn / Juvenile Lammergeier vulture (Gypaetus barbatus) in flight, mobbed by a raven, Grand Bargy cirque, Haute Savoie, France, October.

Simon Littlejohn / Bonelli's eagle chicks (Aquila fasciata) in nest pecking each other, aged one week, Andalusia , Spain, May.

Simon Littlejohn / Pair of Griffon vultures (Gyps fulvus) mating, Andalusia, Spain, June.

Simon Littlejohn / Honey bee (Apis) nectaring from a flowering Eucalyptus tree, Andalusia, Spain, June.

Simon Littlejohn / Female Patagonian puma (Puma concolor patagonia) feeding on a Guanaco (Lama guanacoe) carcass, Torres del Paine National Park, Patagonia, Chile, July.

Simon Littlejohn / Female Patagonian puma (Puma concolor patagonica) dragging the carcass of a young Guanaco (Lama guanicoe), Torres del Paine National Park, Patagonia, Chile, July.

Simon Littlejohn / Close-up of a female Patagonian puma (Puma concolor patagonica) feeding on a Guanaco (Lama guanicoe) carcass, filmed with a remote camera, Torres del Paine National Park, Patagonia, Chile, May.

Simon Littlejohn / Flock of Griffon vultures (Gyps fulvus) feeding, Andalusia, Spain, May.

Simon Littlejohn / Griffon vulture (Gyps fulvus) regurgitating food for its chick, chick struggles to eat, Andalusia, Spain, June.

Simon Littlejohn / Mute swans (Cygnus olor) hissing and lunging at a European otter (Lutra lutra), River Stour, Dorset, England, UK, June.

Simon Littlejohn / Family of European otters (Lutra lutra) feeding and playing amongst Whitewater crowfoot (Ranunculus aquatilis) flowers, River Stour, Dorset, England, UK, June.

Simon Littlejohn / Close-up of a female European otter (Lutra lutra) and two juveniles feeding in a river, River Stour, Dorset, England, UK, June.

Simon Littlejohn / Female European otter (Lutra lutra) and two large pups playing and feeding in mid river, River Stour, Dorset, England, UK, June.

Dave Watts / Hoopoe (Upupa epops) male and female pair visiting nest to feed chicks, France

Brian Bevan / Male European cuckoo (Cuculus canorus) trying to mate with a decoy female, used as part of a scientific study, Bedfordshire, England, UK, May.

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) trying to mate with a decoy female, used as part of a scientific study, 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.

Morley Read / Slow motion shot of a Rufous tailed hummingbird (Amazilia tzacatl) drinking nectar from a Heliconia flower, Mindo, Ecuador.

Morley Read / Slow motion shot of a Violet tailed sylph hummingbird (Aglaiocercus coelestis) drinking nectar from a Heliconia flower, Mindo, Ecuador.

Morley Read / Mist blowing through cloudforest, Mindo, Ecuador, 2019.

Konrad Wothe / Macgregor's bowerbird (Amblyornis macgregoriae) singing in rainforest, Papua New Guinea.

Konrad Wothe / Macgregor's bowerbird (Amblyornis macgregoriae) decorating his bower in a rainforest, Papua New Guinea.

Konrad Wothe / Static shot of rain falling in a rainforest, Papua New Guinea.

Konrad Wothe / Macgregor's bowerbird (Amblyornis macgregoriae) at his bower in a rainforest, Papua New Guinea.

Konrad Wothe / Male Lawes' parotia bird of paradise (Parotia lawesii) displaying in a rainforest, Papua New Guinea.

Konrad Wothe / Male Lawes' parotia bird of paradise (Parotia lawesii) cleaning its display ground in a rainforest, Papua New Guinea.

Konrad Wothe / Two male Lawes' parotia birds of paradise (Parotia lawesii) hopping on its display ground, with females watching nearby, Papua New Guinea.

Mark Carwardine / Aerial shot zooming in on a superpod of Short-beaked common dolphins (Delphinus delphis), Sea of Cortez, Baja California, Mexico.

Matthew Maran / Red fox vixen (Vulpes vulpes) with two suckling cubs in an allotment, London, England, UK, May.

Matthew Maran / Red fox vixen (Vulpes vulpes) grooming a suckling cub in an allotment, London, England, UK, May.

Matthew Maran / Red fox vixen (Vulpes vulpes) with four suckling cubs in an allotment, one jumping over her back, London, England, UK, May.

Matthew Maran / Red fox vixen (Vulpes vulpes) with four suckling cubs in an allotment, cubs start to play, London, England, UK, May.

Matthew Maran / Close up of a Red fox vixen (Vulpes vulpes) grooming her five cubs at den entrance in an allotment, cubs begin to suckle, London, England, UK, April.

Matthew Maran / Red fox cubs (Vulpes vulpes) play fighting in an allotment, London, England, UK, June.

Matthew Maran / Red fox (Vulpes vulpes) family in an allotment, with rival male fox in background, London, England, UK, June.

Matthew Maran / Male Red fox (Vulpes vulpes) interacting with cub in allotment, London, England, UK, June.

Matthew Maran / Red fox vixen (Vulpes vulpes) grooming and playing with her cubs in an allotment, London, England, UK, June.