Charles Darwin in his evolutionary tree
Charles Darwin in his evolutionary tree. Caricature of the British naturalist Charles Robert Darwin (1809-1882) sitting in his 'evolutionary tree'. Darwin studied the differences in closely related but geographically separated species. The evolutionary tree was the notion that all living things are related and, as different species have evolved from common ancestors, new 'branches' of the tree occur. This notion was first illustrated and popularised in The Origin of Species (1859), which also discussed 'natural selection', the notion that variations in species form arose over time, but only those variations which enhanced a species' chance of survival would be propagated.
© BILL SANDERSON/SCIENCE PHOTO LIBRARY
Two Goldfinches (Carduelis carduelis) squabbling over Common teasel (Dipsacus fullonum)
Two Goldfinches (Carduelis carduelis) squabbling over Common teasel (Dipsacus fullonum) seeds in winter, Hope Farm RSPB reserve, Cambridgeshire, England, UK, February. 2020VISION Exhibition. 2020VISION Book Plate.
2020vision, 2020vision Book Plate, 2020vision Exhibition, Action, Aggression, Behaviour, Birds, Carduelis Carduelis, Cold, Copyspace, Dicotyledons, Dipsacaceae, England, Europe, Farmland, Farms, Feeding, Finches, Flying, Fringillidae, Gardens, Plants, Reserve, Seeds, Snow, Songbirds, Squabble, Uk, Urban, Vertebrates, Vocalisation, White, Winter
Siskin (Carduelis spinus) male at garden pool, Scotland, UK, May
Siskin (Carduelis spinus) male at garden pool, Scotland, UK, May. Did you know? The total combined size of the UKs gardens is bigger than all our National Nature Reserves put together!
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