Mark Hamblin / 2020VISION / Greenfinch (Carduelis chloris) male perched in hedgerow in frost, Scotland, UK, December

Colin Varndell / Greenfinches (Carduelis chloris) squabbling in flight, Dorset, UK, February

Colin Varndell / Male Greenfinches (Carduelis chloris) squabbling in flight. Dorset, UK, March.

Colin Varndell / Male Greenfinch (Carduelus chloris) in flight, calling Dorset, UK, February

Stephen Dalton / Collection of bird feeders in garden, with Greenfinches (Carduelis chloris) and Great tits (Parus major) UK

Tim Laman / Orange / Red eyed treefrog (Litoria chloris) in the rainforest of the Atherton Tablelands, Queensland, Australia

Wild Wonders of Europe / Varesvuo / Greenfinch (Carduelis chloris) male and female at water, Pusztaszer, Hungary, May 2008

Wild Wonders of Europe / Varesvuo / Greenfinch (Carduelis chloris) drinking, Pusztaszer, Hungary, May 2008

Andy Sands / Male Greenfinch (Carduelis chloris) amongst Pussy willow catkins, Hertfordshire, England, UK

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

David Kjaer / Greenfinch male perched amongst spring blossom {Carduelis chloris} Wiltshire, UK

Mike Wilkes / Greenfinch (Carduelis chloris) eating pyracantha UK berries. Worcestershire

Mike Wilkes / Greenfinch and hawthorn berries. UK

Mike Wilkes / Greenfinch on flowering sallow (Carduelis chloris) Wiltshire UK

Gary K. Smith / Greenfinch (Carduelis chloris) male perched on Blackthorn in flower, Norfolk, UK, April

Peter Cairns / 2020VISION / Greenfinch (Carduelis chloris) in snowfall. Cairngorms National Park, Scotland, February.

Alan Williams / Male Greenfinch (Carduelis chloris) perched on Hawthorn branch, Cheshire, UK, April

Alan Williams / Male Greenfinch (Carduelis chloris) drinking at birdbath, Cheshire, UK, April

Ernie Janes / Greenfinch (Carduelis chloris) on hawthorn blossom (Cratageus monogyna) UK

Ernie Janes / Greenfinch (Carduelis chloris) on Hawthorn Blossom (Cratageus monogyna), UK

Ernie Janes / Greenfinch (Carduelis chloris) perched amongst Pussy willow catkins (Salix caprea) UK, March.

Ernie Janes / Greenfinch (Carduelis chloris) perched amongst Pussy willow catkins (Salix caprea) UK, March.

Ernie Janes / Greenfinch (Carduelis chloris) in flight, UK, March.

Mark Hamblin / 2020VISION / Greenfinch (Carduelis chloris) male perched on branch in snow, Scotland, UK, December

Mark Hamblin / 2020VISION / Dunnock (Prunella modularis) and Greenfinch (Carduelis chloris) fighting, Scotland, January

Mark Hamblin / 2020VISION / Greenfinch (Carduelis chloris) female perched on branch in snow, Scotland, UK, December

Mark Hamblin / 2020VISION / Greenfinch (Carduelis chloris) male perched on branch in snow, Scotland, UK, December

Ernie Janes / Greenfinch (Carduelis chloris) in flight near Hazel catkins, UK January

Ernie Janes / Greenfinch (Carduelis chloris) on hawthorn berries, UK

Ernie Janes / Greenfinch (Carduelis chloris) on blackthorn / sloe berries, UK

Ernie Janes / Greenfinches (Carduelis chloris) in flight, UK

Ernie Janes / Greenfinch (Carduelis chloris) in flight, UK

Andy Sands / Male Greenfinch (Carduelis chloris) feeding on dock seeds. Hertfordshire, England, UK, January.

Colin Varndell / Greenfinch (Carduelis chloris) male perched in winter, Dorset, UK, December

Ernie Janes / Male Greenfinch (Carduelis chloris) calling on conifer, Norfolk, UK, June

Ernie Janes / Male Greenfinch (Carduelis chloris) on twig in flowering Apple tree, UK, April

Ernie Janes / Female Chaffinch (Fringilla coelebs) left, perched next to Greenfinch (Carduelis chloris) Norfolk, UK, May

Ernie Janes / Greenfinch (Carduelis chloris) with colour mutation, UK, April

Ernie Janes / Greenfinch (Carduelis chloris) perched on blossom, Norfolk, UK

Ernie Janes / Great tit (Parus major) and Greenfinch (Carduelis chloris) feeding on seeds at garden feeder, UK

Ernie Janes / Greenfinch (Carduelis chloris) and Goldfinch (Carduelis carduelis) perched amongst Hawthorn berries, Norfolk, UK

Markus Varesvuo / Greenfinch (Carduelis chloris) perched on snow calling. Uto, Finland, April.

Alan Williams / Male Greenfinch (Carduelis chloris) drinking at bird bath in garden, Cheshire, UK, April

Fabrice Cahez / Two European Greenfinch (Carduelis chloris) perched in snow. Vosges, France, December.

Brent Stephenson / Collared Kingfisher (Todiramphus chloris) perched on a branch. Vaunggava, Southern Lau Group, Fiji, November.

Brent Stephenson / Rifleman (Acanthisitta chloris) male collecting food for its nestlings. Boundary Stream Mainland Island, Hawkes Bay, New Zealand, January.

Colin Varndell / Adult male Greenfinch (Carduelis chloris) perched among Hawthorn (Crataegus sp.) berries. Dorset, UK.

Bernard Castelein / Greenfinch (Carduelis chloris) on a snowy tree stump. Brasschaat, Belgium, December.

Florian Möllers / Greenfinch (Carduelis chloris) perched on cherry blossom, Berlin, Germany, April

Florian Möllers / Greenfinch (Carduelis chloris) perched on cherry blossom, Berlin, Germany, April

Florian Möllers / Greenfinch (Carduelis chloris) perched, Berlin, Germany.

Gary K. Smith / Greenfinch (Carduelis chloris) female perched on Oak branch, Norfolk, UK, November

Gary K. Smith / Greenfinch (Carduelis chloris) male perched on rose hips, Norfolk, UK, November

Alan Williams / Male Greenfinch (Carduelis chloris) perching on Hawthorn, Cheshire, UK, October.

Alan Williams / Female Greenfinch (Carduelis chloris) perching on bramble stem on farmland, Cheshire, UK, April

Alan Williams / Male Greenfinch (Carduelis chloris) perching on Bramble stem on farmland, Cheshire, UK, April.

Alan Williams / Male Greenfinch (Carduelis chloris) singing, whilst perched on bramble stem. Cheshire, UK, April

Mike Read / European greenfinch (Carduelis chloris) on sunflower seed head feeding, in garden, Ringwood, Hampshire, England, October

Peter Cairns / naturepl.com / Greenfinch (Carduelis chloris) male reflected in garden pool, Cairngorms National Park, Scotland, UK, May

Peter Cairns / naturepl.com / Greenfinch (Carduelis chloris) female reflected in garden pool, Cairngorms National Park, Scotland, UK, May

Stephen Dalton / Several varieties of garden birds feeding on seeds at garden bird feeder, including Goldfinch {Carduelis carduelis}, Chaffinch {Fringilla coelebs} and Greenfinch {Carduelis chloris} Sussex, UK

Tim Laman / Collared Kingfisher (Todiramphus chloris) perched, preening in the mangroves, Sundarban Forest, Khulna Province, Bangladesh.

Tim Laman / Orange / Red eyed treefrog (Litoria chloris) in the rainforest of the Atherton Tablelands, Queensland, Australia

Tim Martin / Juvenile Greenfinch (Carduelis chloris) perched on sunflower, adult in background, Isles of Scilly, UK. August

Tim Martin / Adult Greenfinch (Carduelis chloris) feeding juvenile on sunflower plant, Isles of Scilly, UK. August

Tim Martin / Adult and juvenile Greenfinch (Carduelis chloris) on sunflower, Isles of Scilly, UK. August

Wild Wonders of Europe / Varesvuo / Greenfinch (Carduelis chloris) bathing, Pusztaszer, Hungary, May 2008

Wild Wonders of Europe / Varesvuo / Greenfinch (Carduelis chloris) female, Pusztaszer, Hungary, May 2008

Wild Wonders of Europe / Varesvuo / Greenfinch (Carduelis chloris) drinking, Pusztaszer, Hungary, May 2008

Duncan Usher / House Sparrow (Passer domesticus) male and female on garden fence next to a European Greenfinch (Chloris chloris), Lower Saxony, Germany

Robert Valentic / Red eyed tree frog {Litoria chloris} male perching above pond in wet season about to call for mate, Coffs Harbour, New South Wales, Australia

Thomas Marent / Australian Red-eyed Treefrog (Litoria chloris) calling, Lamington National Park, Australia

Thomas Marent / Australian Red-eyed Treefrog (Litoria chloris) pair in amplexus, Lamington National Park, Australia

Duncan Usher / European Greenfinch (Chloris chloris) with berries, Lower Saxony, Germany

Duncan Usher / European Greenfinch (Chloris chloris) and Brambling (Fringilla montifringilla) feeding at bird feeder, Lower Saxony, Germany

Duncan Usher / European Greenfinch (Chloris chloris) flying towards bird feeder, Lower Saxony, Germany

Duncan Usher / European Greenfinch (Chloris chloris) showing aggression towards other birds, Lower Saxony, Germany

Duncan Usher / European Greenfinch (Chloris chloris) pair fighting on garden fence, Lower Saxony, Germany

Dave Bevan / Greenfinch (Carduelis chloris) male perched on Gorse, Wales, UK, May

Gary K. Smith / Goldfinches (Carduelis carduelis), Greenfinches (Carduelis chloris) and Siskins (Carduelis spinus) feeding on Nyger Seed, Peanuts and Black Sunflower seed from garden bird feeders in the snow, Norfolk...

Gary K. Smith / Goldfinches (Carduelis carduelis) Greenfinch(Carduelis chloris) and Siskin (Carduelis spinus) feeding on Niger Seed, Peanuts and Black Sunflower seed from garden bird feeders in the snow, Norfolk, UK

Andy Sands / Male Greenfinch (Carduelis chloris) calling amongst Blackthorn blossom, Hertfordshire, England, UK

Andy Sands / Male Greenfinch (Carduelis chloris) portrait on lichen covered twig, Hertfordshire, England, UK

Andy Sands / Male Greenfinch (Carduelis chloris) amongst Blackthorn blossom, Hertfordshire, England, UK

PREMAPHOTOS / Red-eyed tree frog (Litoria chloris) male with inflated throat sac, calling at night. Queensland, Australia

Jose B. Ruiz / Greenfinch {Carduelis chloris} Plá de Xirau, Alicante, Spain

Thomas Marent / Australian Red-eyed Treefrog (Litoria chloris) pair mating, Lamington National Park, Australia

Jose B. Ruiz / Male Greenfinch {Carduelis chloris} perching on rock in water, Alicante, Spain

Jose B. Ruiz / Male Greenfinch {Carduelis chloris} perching on rock in water, Alicante, Spain

Gary K. Smith / Greenfinch {Carduelis chloris} female perching on garden spade, Norfolk, UK, April

Gary K. Smith / Greenfinch {Carduelis chloris} female perching on garden spade, Norfolk, UK, April

PREMAPHOTOS / Smaller parasa moth (Parasa chloris) South Carolina, USA

Jose B. Ruiz / Greenfinch {Carduelis chloris} at waters edge, Spain

Jose B. Ruiz / Male Greenfinch {Carduelis chloris} drinking, Spain

Jose B. Ruiz / Greenfinch {Carduelis chloris} pair perching at waters edge, Spain