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

Marie Read / American goldfinch (Carduelis tristis) male in breeding plumage, perched in Eastern redbud flowers in spring, New York, USA May.

Karine Aigner / Portrait of a Purple finch (Haemorhous purpureus) with white background, Block island, Rhode Island, USA. Bird caught during scientific research.

Tim Zurowski/ BIA / Purple Finch (Carpodacus purpureus) male, British Columbia, Canada

Juergen Freund / Gouldian finch (Erythrura gouldiae) red headed male, Mareeba, Queensland, Australia.

Juergen Freund / Gouldian finches (Erythrura gouldiae) red head male and black headed female, perched on branch, Mareeba, Queensland, Australia.

Alan Murphy / Purple Finch (Carpodacus purpureus) male, British Columbia, Canada

Alan Murphy / Purple Finch (Carpodacus purpureus) male, British Columbia, Canada

Marie Read / Purple finch (Carpodacus purpureus) male perched amongst Eastern redbud blossom in spring, New York, USA May.

Scott Leslie / Purple Finch (Carpodacus purpureus) female, Canada

Glenn Bartley / Purple Finch (Carpodacus purpureus) male, British Columbia, Canada

Glenn Bartley / Purple Finch (Carpodacus purpureus) female, British Columbia, Canada