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.

Glenn Bartley/ BIA / Patagonian Sierra-Finch (Phrygilus patagonicus) male calling, Andes, Chile

Dong Lei / White-browed Rosefinch (Carpodacus thura) with Tibetan prayer flags featuring the 'wind horse'. Pamuling mountain, Qinghai-Tibetan Plateau, China,

Dong Lei / Plain mountain finch (Leucosticte nemoricola), three perched on rock. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. July.

Jed Weingarten / Wild Wonders of China / Mixed flock of Mountain finches including Brandt's mountain finches (Leucosticte brandti) China, Sichuan Province, Garze Prefecture, Serxu County.

Jed Weingarten / Wild Wonders of China / Mixed flock of Mountain finches including Brandt's mountain finches (Leucosticte brandti) China, Sichuan Province, Garze Prefecture, Serxu County.

Oriol Alamany / Flock of Black-winged Snowfinch (Montifringilla adamsi) in flight, Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February

Erlend Haarberg / Common redpoll (Acanthis flammea) males fighting Vauldalen, Norway, April. .

Kerstin Hinze / Male Bullfinch (Pyrrhula pyrrhula) feeding on Rowan (Sorbus) berries, before flying away, Bavarian Forest National Park, Germany.

Kerstin Hinze / Male Bullfinch (Pyrrhula pyrrhula) feeding on Rowan (Sorbus) berries, before flying away, Bavarian Forest National Park, Germany.

Glenn Bartley/ BIA / Slaty Brush-Finch (Atlapetes schistaceus), Andes, Colombia

Glenn Bartley/ BIA / Patagonian Sierra-Finch (Phrygilus patagonicus) male, Andes, Chile

Jack Dykinga / House finches (Carpodacus mexicanus) aerial territorial fight, Santa Catalina Mountain foothills, Sonoran Desert. Arizona, USA. November. Small repro only

Dong Lei / Scaly-breasted munia (Lonchura punctulata) pair, Gaoligong Mountain National Nature Reserve, Yunnan Province, China, February.

Julian Hume / Illustration of extinct Mauka grosbeak (Orthiospiza howarthi) feeding its young in the mountain forests of Maui, Hawaii.

Dong Lei / Red-fronted rosefinch (Carpodacus puniceus) Balang Mountain, Wolong National Nature Reserve, Sichuan Province, China.

Dong Lei / Red-fronted rosefinch (Carpodacus puniceus) Balang Mountain, Wolong National Nature Reserve, Sichuan Province, China.

David Kjaer / Crossbill (Loxia curvirostra) male, Pyrenees, Spain, July

Jussi Murtosaari / Pine Grosbeak (Pinicola enucleator) feeding on Rowan berries, Finland. October.

Dong Lei / Three-banded rosefinch (Carpodacus trifasciatus) feeding, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, January.

Dong Lei / Three-banded rosefinch (Carpodacus trifasciatus) singing, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, January.

Dong Lei / White-winged grosbeaks (Mycerobas carnipes) on ground, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, January.

Dong Lei / Streaked rosefinch (Carpodacus rubicilloides) on ground, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, January.

Dong Lei / Plain mountain-finches (Leucosticte nemoricola) feeding. Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, October.

Dong Lei / White-browed rosefinch (Carpodacus thura) flock drinking from small stream, Lantsang Mekong river, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China, January. Taken with rem...

Dong Lei / Vinaceous rosefinch (Carpodacus vinaceus) perched, Kawakarpo Mountain, Meri Snow Mountain National Park, Yunnan Province, China.

Dong Lei / Grey-headed Bullfinch (Pyrrhula erythaca) perched, Gongga Mountain National Nature Reserve, Luding county, Sichuan Province, China.

Dong Lei / White-browed rosefinch (Carpodacus thura) perched, Lianhuashan Mountain, Gansu province, China.

Konstantin Mikhailov / Plain Mountain finch (Leucosticte nemoricola) juvenile on rocks, Altai Mountains, Chuysky Range, Siberia, Russia, August.

Konstantin Mikhailov / Plain Mountain finch (Leucosticte nemoricola) juvenile on rocks, Altai Mountains, Chuysky Range, Siberia, Russia, August.

Dong Lei / Tibetan Serin (Carduelis thibetana) perched, Gaoligong Mountain National Nature Reserve, Tengchong county, Yunnan Province, China, Asia

Dong Lei / Scaly-breasted Munia (Lonchura punctulata) perched, Gaoligong Mountain National Nature Reserve, Tengchong county, Yunnan Province, China, Asia

Roland Seitre / Polylepis woods at 3600m habitat for Cochabamba Mountain-Finch (Poospiza garleppi) Quillacollo, Cochabamba, Bolivia. Endemic.

Dong Lei / Plain Mountain Finch (Leucosticte nemoricola) large flock roosting in tree, Nyingchi Prefecture, Qinhai-Tibetan Plateau, China, November.

Ben Lascelles / Brandt's Mountain Finch (Leucosticte brandti) on ground, Moncier, near Mount Kailash, Tibet. June

Ben Lascelles / Brandt's Mountain Finch (Leucosticte brandti) on ground, Zhong Chu River Valley, Mount Kailash, Tibet, June

Michael & Patricia Fogden / White-winged Brush-Finch (Atlapetes leucopterus) feeding on Hollowheart (Acnistus arborescens) berries in cloud forest, Tandayapa Valley, western slope of Andes, Ecuador

Tom Vezo / Lesser Goldfinch (Carduelis psaltria) male, Santa Rita Mountains, Arizona

Tom Vezo / House Finch (Carpodacus mexicanus) male, Santa Rita Mountains, Arizona

Tom Vezo / House Finch (Carpodacus mexicanus) male, Santa Rita Mountains, Arizona

Tom Vezo / House Finch (Carpodacus mexicanus) male, Santa Rita Mountains, Arizona

Hanne Jens Eriksen / Hodgson's rosy finch {Leucosticte nemoricola} Kyrgyzstan, Asia Plain mountain

Mark Moffett / Woodpecker Finch (Camarhynchus pallidus), Sierra Negra, Isabella Island, Galapagos Islands, Ecuador

Mark Moffett / Vegetarian Tree Finch (Camarhynchus crassirostris) eating, Sierra Negra, Isabella Island, Galapagos Islands, Ecuador

Tui De Roy / Mourning Sierra-Finch (Phrygilus fruticeti) portrait, on rock, Colca Canyon, Southern Andes, Peru

Tui De Roy / Darwin's Finch (Geospiza sp) group picking ticks from Volcan Alcedo Giant Tortoise (Chelonoidis nigra vandenburghi), Alcedo Volcano, Isabella Island, Galapagos Islands, Ecuador

Glenn Bartley/ BIA / Patagonian Sierra-Finch (Phrygilus patagonicus) male, Andes, Chile

Glenn Bartley/ BIA / Common Diuca-Finch (Diuca diuca), Andes, Chile

Glenn Bartley/ BIA / Patagonian Sierra-Finch (Phrygilus patagonicus) male calling, Andes, Chile

Glenn Bartley/ BIA / Patagonian Sierra-Finch (Phrygilus patagonicus) male calling, Andes, Chile

Glenn Bartley/ BIA / Common Diuca-Finch (Diuca diuca), Andes, Chile

Robin Chittenden / Bullfinch (Pyrrhula pyrrhula) male, perched on branch feeding on Rowen (Sorbus aucuparia) buds, Scottish Highland, UK. April.

Robin Chittenden / Bullfinch (Pyrrhula pyrrhula) male, perched on branch feeding on Rowen (Sorbus aucuparia) buds, Scottish Highland, UK. April.

Robin Chittenden / Bullfinch (Pyrrhula pyrrhula) male, perched on branch feeding on Rowen (Sorbus aucuparia) buds, Scottish Highland, UK. April.

Robin Chittenden / Bullfinch (Pyrrhula pyrrhula) male, perched on branch feeding on Rowen (Sorbus aucuparia) buds, Scottish Highland, UK. April.

Robin Chittenden / Bullfinch (Pyrrhula pyrrhula) male, perched on branch feeding on Rowen (Sorbus aucuparia) buds, Scottish Highland, UK. April.

Jussi Murtosaari / Pine grosbeak (Pinicola enucleator) perched on snow covered branch, feeding on Rowan (Sorbus sp.) berries, Finland. January.

Jussi Murtosaari / Pine grosbeak (Pinicola enucleator) eating Rowan (Sorbus aucuparia) berries, Finland. November.

Richard Du Toit / Scalyfeathered finch (Sporopipes squamifrons) Mountain Zebra National Park, South Africa.

Jussi Murtosaari / Greenfinch (Carduelis chloris) male gathering nesting material, Mountain hare (Lepus timidus) fur in beak. Liminka, Finland. May.