Andres M. Dominguez / Hawfinch (Coccothraustes coccothraustes) perched on branch amongst Hawthorn (Crataegus sp) berries. Sierra de Grazalema Natural Park, Cadiz, Spain. February.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

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

Ernie Janes / Goldfinch (Carduelis carduelis) feeding on thistle flowers, England

Alan Murphy/ BIA / Pine Grosbeak (Pinicola enucleator) male, Alaska

Markus Johannsen/ BIA / European Greenfinch (Chloris chloris) male, Lower Saxony, Germany

Markus Johannsen/ BIA / European Greenfinch (Chloris chloris) male, Lower Saxony, Germany

Donald M. Jones / Clay-colored Sparrow (Spizella pallida), Montana

Kerstin Hinze / Red crossbill (Loxia curvirostra) feeding from a spruce cone, Bavarian Forest National Park, Germany, October.

Dave Bevan / Female Chaffinch (Fringilla coelebs) bringing moss to nest and incorporating it into nest before flying out of frame, Carmarthenshire, Wales, UK, May.

Dave Bevan / Female Chaffinch (Fringilla coelebs) shaping nest with her body and wings, Carmarthenshire, Wales, UK, May.