Marie Read / Common redpoll (Carduelis flammea), male perched in alder (Alnus rugosa) during a snowstorm in winter, New York, USA, January.

Sven Zacek / Ural owl (Strix uralensis) perched on Alder (Alnus sp) tree at dusk. Tartumaa, Southern Estonia. April.

David Tipling / 2020VISION / Alder flies (Sialis lutaria) hatching on River Wensum, Norfolk, England, UK, June

Kim Taylor / Redpoll (Carduelis flammea) male landing on Alder (Alnus glutinosa) Surrey, England. February

Floris van Breugel / Emerging spring leaves adorn the mossy trees - Vine Maple (Acer circinatum) and Alder (Alnus rubra) in Mt Baker - Snoqualmie National Forest. Washington. April 2013

Fergus Gill / 2020VISION / Mixed woodland of ash alder, oak beech in autumn colours. Kinnoull Hill Woodland Park, Perthshire, Scotland, Novermber 2011.

Mark Hamblin / 2020VISION / Alder trees (Alnus hirsuta) silhouetted and reflected in River Spey in winter, Cairngorms NP, Scotland, UK, December 2010

Andrew Parkinson / Siskin (Carduelis spinus) male peched on an alder branch, Rothiemurchus Forest, Scotland, UK, April.

Florian Möllers / Alder trees (Alnus sp) reflected in standing water in nature reserve, Berlin, Germany, May 2009

Peter Cairns / Flooded birch and alder woodland in autumn, Cairngorms National Park, Scotland, UK, November, RUNNER UP: In Praise of Plants category of the Wildlife Photographer of the Year Competition 2010

Wild Wonders of Europe / della Ferrera / Pool of water left over from the flooded season in a Grey alder (Alnus incana) forest between Koutarica and Mlaka, Lonjsko Polje Nature Park, Sisack-Moslavina county, Slavonia region, Posavina area, C...

Wild Wonders of Europe / Cairns / Great grey owl (Strix nebulosa) backlit in alder tree, Bergslagen, Sweden, June 2009