Marie Read / Snow buntings (Plectrophenax nivalis) flock in flight during a snowstorm, New York, USA, January.

Kerstin Hinze / Snowdrop (Galanthus nivalis) in flower, Lower Saxony, Germany, March.

Paul Hobson / Weasel (Mustela nivalis) head and neck looking out of yellow autumn acer leaves, Sheffield, England, UK.

Paul Hobson / Weasel (Mustela nivalis) investigating birch stump with bracket fungus in autumn woodland, Sheffield.

Paul Hobson / Weasel (Mustela nivalis) looking out of hole on woodland floor with snowdrops, Sheffield, England, UK.

Markus Varesvuo / Flock of Snow Bunting ( Plectrophenax nivalis) flying, Helsinki, Finland March

Richard Steel / Snow Bunting (Plectrophenax nivalis) female, Wales, United Kingdom

Sandra Bartocha / Common Snowdrop (Galanthus nivalis) in Mecklenburg-Strelitz, Mecklenburg-Vorpommern, Germany, March

Alex Hyde / Snowdrop (Galanthus nivalis) Peak District National Park, Derbyshire, UK. March.

Fergus Gill / 2020VISION / Snow Butning (Plectrophenax nivalis) Searching for food in a snow storm. Cairngorms National Park

Ernie Janes / Snowdrops (Galanthus nivalis) in snow, UK February

Laurie Campbell / Snowdrops (Galanthus nivalis) emerging through snow, Roxburghshire, Scotland, February