Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) perched together in branches. It's estimated that four million individiuals return to roost during winter in Black Forest, Germany. February.

Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) roosting together in branches. It's estimated that four million individiuals roost in the Black Forest, during winter months, Germany. February.

Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) taking off / landing on branches. It's estimated that four million individiuals roost in the Black Forest, during winter months, Germany. February.

Ingo Arndt / Flock of Brambling (Fringilla montifringilla) perched at roosting tree, overwintering, Steiermark, Austria

Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) in flight, an estimated four million return to roost overwinter in Black Forest, Germany, March.

Markus Varesvuo / Greenfinch (Carduelis carduelis) perched on branch, feeding on snow covered berries, Vantaa Finland, Scandinavia, December.

Markus Varesvuo / Male Hawfinch (Coccothraustes coccothraustes) perched on branch, Mustio, Finland, April

Markus Varesvuo / Female Bullfinch (Pyrrhula pyrrhula) perched on very top of frost covered pine tree, Kuusamo, Finland, January

Markus Varesvuo / Male Bullfinch (Pyrrhula pyrrhula) perched on frost covered branches, Kuusamo, Finland, January

Markus Varesvuo / Bullfinch (Pyrrhula pyrrhula) male perched on frosty twigs, Kuusamo, Finland, January.

Markus Varesvuo / Two Common redpolls (Careduelis flammea) feeding, Liminka, Finland, February

Markus Varesvuo / Bullfinch (Pyrrhula pyrhula) male perched amongst frozen branches, Kuusamo, Finland