Danny Green / Waxwings (Bombycilla garrulus) feeding on berries in snow. Finland, March

Danny Green / Mountain hare (Lepus timidus) resting Cairngorms, Scotland, March

Erlend Haarberg / Common reeds (Phragmites australis) on a frozen lake, Sel, Norway, March.

Erlend Haarberg / Rock ptarmigan (Lagopus muta) in flight, Tysfjorden, Nordland, Norway, March.

Guy Edwardes / Low angle view of Beech trees (Fagus sylvatica), Compton Down, Dorset, England, UK, March.

Guy Edwardes / Mhangarstaidh Beach, Isle of Lewis, Outer Hebrides, Scotland, UK, March.

Markus Varesvuo / Hawk Owl (Surnia ulula) hunting, Kuhmo, Finland, March.

Markus Varesvuo / Great grey owl (Strix nebulosa) Kuhmo, Finland, March.

Markus Varesvuo / Great Grey Owl (Strix nebulosa) Kuhmo Finland, March.

Markus Varesvuo / Great Grey Owl (Strix nebulosa) hunting over snow, Kuhmo Finland, March.

Markus Varesvuo / Goshawk (Accipiter gentilis) plucking a Willow Grouse (Lagopus lagopus) Liminka, Finland, March.

Markus Varesvuo / Bullfinch (Pyrrhula pyrrhula) in flight, Kuusamo, Finland, March.

Andres M. Dominguez / Siberian tit (Poecile cinctus) perched, Ivalo, Finland. March

Andres M. Dominguez / Pine grosbeak (Pinicola enucleator) Ivalo, Finland. March

Andres M. Dominguez / Black guillemot (Cepphus grylle) adult in flight. Batsfjord. Norway. March

Andres M. Dominguez / Adult male King Eider (Somateria spectabilis) in flight. Batsfjord, Norway, March.

Andres M. Dominguez / Guillemots (Uria aalge) in flight over snow, Vardo, Norway, March.

Andres M. Dominguez / Guillemots (Uria aalge) in flight over snow, Vardo, Norway, March.

Andres M. Dominguez / Adult male King Eider (Somateria spectabilis).Batsfjord, Norway, March.

Andres M. Dominguez / Eider (Somateria mollissima) male animal, Batsfjord, Norway. March

Danny Green / Polar bear (Ursus maritimus) female and cubs play fighting. Svalbard, Norway, March 2018.

Nayan Khanolkar / Tigress (Panthera tigris tigris) with her four cubs from Chandrapur district, Maharashtra, India. She lives in an area known for human-animal conflict and yet is successfully raising her four cubs in...

Chris Mattison / Common wasp (Vespula vulgaris) feeding on bread and jam. Monmouthshire, Wales, UK. March.

John Shaw / James' flamingo / Puna flamingo (Phoenicoparrus jamesi). Lago Colorado, Bolivia. March.

John Shaw / Snowy egret (Egretta thula) shows its breeding plumage. St. Johns Management Area, Florida, USA, March.

Aflo / Red fox (Vulpes vulpes) in snow at sunset, Hokkaido, Japan.

George Sanker / Great egret (Ardea alba) with prey in beak, in evening light. Myakka River State Park, Florida, USA, March. Sequence 2/2.

George Sanker / Great egret (Ardea alba) diving head into water to catch prey, in evening light. Myakka River State Park, Florida, USA, March. Sequence 1/2.

Marie Lochman / Salmon Gum (Eucalyptus salmonophloia), Western Australian endemic plant, Dunn Rock Nature Reserve, March 2015

Oriol Alamany / Snow leopard (Panthera uncia) female with juvenile, walking in snow, in Spiti Valley, Cold Desert Biosphere Reserve, Himalaya, Himachal Pradesh, India, March

Oriol Alamany / Snow leopard (Panthera uncia) male in snow, in Spiti Valley, Cold Desert Biosphere Reserve, Himalaya, Himachal Pradesh, India, March

Oriol Alamany / Snow leopard (Panthera uncia) female (hiding below the rock) with her two juveniles resting in snow, in Spiti Valley, Cold Desert Biosphere Reserve, Himalaya, Himachal Pradesh, India, March

SCOTLAND: The Big Picture / RF - Brown hare, (Lepus europaeus) male pursuing female that is in season, Islay, Scotland, UK., March (This image may be licensed either as rights managed or royalty free.)

SCOTLAND: The Big Picture / RF - Brown hare, (Lepus europaeus), male and female displaying courtship behaviour, Islay, Scotland, UK., March (This image may be licensed either as rights managed or royalty free.)

SCOTLAND: The Big Picture / Red squirrel, (Sciurus vulgaris), silhouetted on stump at dawn, Scotland, UK.March

SCOTLAND: The Big Picture / Brown hare, (Lepus europaeus), group of animals in field, Islay, Scotland, UK., March

Terry Whittaker / RF - Arctic foxes (Vulpes lagopus) interacting Blue colour morph. Hornstrandir Nature Reserve, Iceland. March. (This image may be licensed either as rights managed or royalty free.)

Terry Whittaker / Arctic fox (Vulpes lagopus). Blue colour morph. Hornstrandir Nature Reserve, Iceland. March

Marie Read / Sandhill cranes (Grus canadensis) (Florida race), adult with two small chicks crossing highway, Kissimmee, Florida, USA, March.

Andy Rouse / Barn owl (Tyto alba) hunting with sunset light on wings, UK. March.