Sven Zacek / Eurasian siskin (Carduelis spinus) feeding on Alder (Alnus sp) cones in falling snow. Tartumaa, Southern Estonia. February.

Fabrice Cahez / Eurasian siskin (Spinus spinus) male perched on snowy conifer, Vosges, France, March.

Fabrice Cahez / Eurasian siskin (Spinus spinus) female perched on snowy conifer, Vosges, France, March.

Fabrice Cahez / Eurasian siskin (Spinus spinus) male on tree in autumn, Vosges, France, March.

SCOTLAND: The Big Picture / Siskin (Carduelis spinus) male showing aggression, perched on lichen covered branch. Scotland, UK. May.

David Tipling / Eurasian siskin (Spinus spinus) male feeding on Alder, Minsmere, Suffolk, England, UK, March.

Robin Chittenden / Eurasian Siskin (Carduelis spinus) perched on Stinging nettle (Urtica dioica), Ceredigion, Wales, UK. August.

Loic Poidevin / Siskin (Carduelis spinus) on Elm (Ulmus minor) branch, Vendee, Pays-de-la-Loire, France. March.

Loic Poidevin / Eurasian siskin (Carduelis spinus) perched on a branch, Vendee, France, February.

Loic Poidevin / Eurasian siskin (Carduelis spinus) perched on a branch, Vendee, France, February.

Dave Bevan / Flock of Siskins (Carduelis spinus) feeding on a bird table in falling snow, Carmarthenshire, Wales, UK, February.

Dave Bevan / Flock of Siskins (Carduelis spinus) feeding and squabbling on a seed feeder in falling snow, Carmarthenshire, Wales, UK, February.