Paul D Stewart / 1881 portrait of Charles Robert Darwin (12 February 1809 - 19 April 1882) English Naturalist and author of the Origin of Species. 1922 Hand coloured portrait aquatint of Darwin by G. Sidney Hunt after...

Ashley Cooper / The Norfolk Naturalists Trust visitor centre at Cley, on the North Norfolk Coast. This is a 'green building' which has a green roof, which collects rainwater for flushing the buildings toilets, a grou...

Laurent Geslin / Naturalist ringing Tengmalm's / Boreal owl (Aegolius funereus) chick, Jura, Switzerland, April.

Laurent Geslin / Naturalist ringing Tengmalm's / Boreal owl (Aegolius funereus) Jura, Switzerland. April 2015.

Laurent Geslin / Naturalist ringing Tengmalm's / Boreal owl (Aegolius funereus) Jura, Switzerland.

Laurent Geslin / Naturalist removing Tengmalm's / Boreal owl (Aegolius funereus) from nest box to be ringed. Jura, Switzerland. April 2015.

Paul D Stewart / Photograph of George John Romanes (1848-1894) Canadian born English naturalist, friend of Darwin, and author of Animal Intelligence and Mental evolution.

Paul D Stewart / Photograph of John Thomas Gulick (March 13, 1832 - April 14, 1923) an American missionary and naturalist from Hawaii. He performed some of the first modern evolutionary studies, starting with a colle...

Paul D Stewart / The history of life, proposed by Swiss-American naturalist Louis Agassiz. Agassiz would disagree strongly with Darwin's theory of evolution. This diagram from 1855 shows how he understood biological...

Paul D Stewart / Illustration of extinct Thylacine (Thylacinus cynocephalus) by the French naturalist and physician Jean-Emmanuel-Marie Le Maout (1799-1877), published in Les Trois Regnes de la Nature, 1853.

Paul D Stewart / Copperplate engraving of great sea monster reported by Hans Egede in 1735. From The Naturalist's Library by Sir William Jardine. This monster or was reportedly spotted off the coast of Greenland, and...

Paul D Stewart / Illustration plates of Duck billed platypus (Ornithorhynchus anatinus) including anatomy of feet and bill, by Frederick Nodder from George Shaw, 'The Naturalist's Miscellany' vol. 10, 1799

Paul D Stewart / Illustration plate of Duck billed platypus (Ornithorhynchus anatinus), by Frederick Nodder from George Shaw, 'The Naturalist's Miscellany' vol. 10. 1799

Paul D Stewart / Portrait of Pierre Belon (1517-1564) renaissance French explorer, naturalist, writer and diplomat. He worked on a range of topics including ichthyology, ornithology, botany, comparative anatomy, archi...

Paul D Stewart / Portrait of Pierre Belon (1517-1564) renaissance French explorer, naturalist, writer and diplomat. He worked on a range of topics including ichthyology, ornithology, botany, comparative anatomy, archi...

Paul D Stewart / Illustration of Great auk (Pinguinus impennis) swimming, from Welsh naturalist Thomas Pennant's book 'British Zoology' 1776 .This species, now extinct was last sighted in 1852 on the Grand Banks of Ne...

Paul D Stewart / Portrait of George Shaw (175 - 1813) English zoologist most famous for his illustrated encyclopaedic zoology books such as 'General Zoology'(16 vol s 1809-1826) and with Nodder 'The Naturalist's Mis...

Paul D Stewart / Portrait of Edward Forbes (1815 - 1854). British naturalist, pioneer of biogeography, he studied the plant and animal life of the British Isles in the context of geological changes.

Paul D Stewart / Portrait of William Dampier, naturalist, explorer and buccaneer (August 1651 - March 1715). A posthumous 1787 Copperplate engraving by Charles Sherwin after the 1698 painting by T. Murray.

Paul D Stewart / Portrait of George Cuvier holding a fossil fish. George Cuvier was a naturalist, comparative anatomist and palaeontologist (1769 - 1832).

Paul D Stewart / Portrait of the Ulisse Aldrovandi (1522-1605) Italian scientist, in particular a naturalist and physician. He taught in Bologna and his work 'Antidotarii Bononiensis Epitome' (1574) described the prop...

Terry Whittaker / Naturalist / guide talking to tourists on whale-watching boat, Husavik, Skjalfandi Bay, Iceland, July 2012.

Terry Whittaker / Naturalist and TV presenter Bill Oddie talking to a protestor holding a sign, at anti badger cull march, London 1st June 2013.

Paul D Stewart / 1837 illustration of Greenland / Bowhead Whale (Balaena mysticetus) breaching, from Jardine's 'Naturalist's Library', Whales, Plate 23 Volume VI, from artwork of Stewart engraved by W. H. Lizars. Ori...

Tim Laman / Malaysian naturalist, Saimon Ambi, observes a Wallace's flying frog (Rhacophorus nigropalmatus) on a branch near a pig wallow pool breeding site in the lowland rainforest, Danum Valley Conservation Ar...

Katherine Feng / Giant Panda (Ailuropoda melanoleuca) researcher Huang Jinyan checking former nesting site, Wolong Nature Reserve, endangered, China

Tim Laman / Bangladeshi naturalist / guide Rubaiyat Mansur (Mowgli) Sundarban Forest, Khulna Province, Bangladesh. April 2006

Jason Smalley / Scientist researching bogland habitat, identifying grasses, UK.

Jason Smalley / Scientist researching heathland habitat, identifying grasses, UK.

Jason Smalley / David Bellamy, wildlife presenter and conservationist, UK. 2005

Jason Smalley / David Bellamy, wildlife presenter and conservationist, UK. 2005

Paul D Stewart / Illustration of Laelaps (Dryptosaurus) confronting Elasmosaurus with Hadrosaurus foraging in the background. From Edwin Drinker Cope 'The fossil reptiles of New Jersey' in 'American Naturalist' vol 3...

Paul D Stewart / 1881 portrait of Charles Robert Darwin ( 12 February 1809 - 19 April 1882), English Naturalist and author of the Origin of Species. 1922 Hand coloured portrait aquatint of Darwin by G. Sidney Hunt aft...

Paul D Stewart / Illustration of Greater Horseshoe Bat (Rhinolophus ferrumequinum) from Jardine's 'Naturalist's Library' series engravings by Lizars, drawn by Stewart. Published mid 1830's.

Paul D Stewart / Illustration of extinct Thylacine / Tasmanian Tiger (Thylacinus cyanocephalus) engraved by W. Lizars. From Jardine's series 'The Naturalist's Library; Mammalia' 1841 ('The Natural History of Marsupial...

Paul D Stewart / 1837 illustration of lesser Rorqual (now more commonly known as Minke whale Balaenoptera acuto-rostrata) beached and tied. From Jardine's 'Naturalist's Library', Whales, Volume VI, from artwork of Ste...

Paul D Stewart / Illustration of four breeds of sheep (Ovis aries) from plates in Jardine's 'The Naturalist's Library' series, specifically 'The Natural History of the Ruminating Animals, Goats, Sheep, Wild and Domest...

Paul D Stewart / 1698 illustration of William Dampier, naturalist, explorer and buccaneer (August 1651 - March 1715). A posthumous 1787 Copperplate engraving by Charles Sherwin after the 1698 painting by T. Murray. On...

Paul D Stewart / Illustration of Chimpanzee (Pan troglodytes). 1833, Plate 1. Troglodytes niger, 'Black Orang'. The species was not well known yet with the first arriving in London zoo in 1835. Steel plate engraving w...

Paul D Stewart / Illustration of Orangutan (Pongo pygmaeus). Plate 2 (and 3) Propithecus satyrus. 'The Red or Asiatic Orangutang' (sic). The orangutan was the first great ape to be well known in Europe and Britain. On...

Paul D Stewart / Two books on collecting natural history specimens (particularly insects) published at the end of the 18th century. They would have influenced the famous specimen collectors of the early 18th century s...

Paul D Stewart / Fine steel engraving with later hand colouring by l. Lewitt and Radclyffe of the 'British Museum - Zoological Gallery' in 'London Interiors' published by Joseph Mead of London (1841). The engraving sh...

Paul D Stewart / Illustration of people capturing a caiman. 'It was the first and last time I was ever on a Cayman's back' coloured engraving by Robert Cruikshank after drawing of Captain Edward Jones. Published in 18...

Paul D Stewart / Illustration of people capturing a caiman. 'It was the first and last time I was ever on a Cayman's back' coloured engraving by Robert Cruikshank after drawing of Captain Edward Jones. Published in 18...

Paul D Stewart / Portrait of Charles Waterton (1782-1865), steel plate engraved frontis with later tinting from 'Essays on Natural History by Charles Waterton, edited with a life of the author by Norman Moore, B.A.' P...

Paul D Stewart / Portrait of George Cuvier, naturalist, comparative anatomist and palaeontologist (23 August 1769 - 13 May 1832). Portrait engraving by James Thompson, issued by Mackenzie Glasgow around 1833 with late...

Paul D Stewart / Portrait of Friedrich Alexander von Humboldt (14th September 1769 - 6th May 1859), Lizars' Steel engraving c 1830 with hand colouring after the 1806 painting by Friedrich Weitsch. A German explorer an...

Paul D Stewart / Sir Joseph Banks, botanist and naturalist. (13th February 1743 - 19th June 1820). Engraving by C.E. Wagstaff with later colouring, after the painting of Banks as President of the Royal Society by Phil...

Paul D Stewart / 1806 'Kangaroo' (Macropus giganteus), a copper engraving of a keeper attempting to box a kangaroo. First image of a boxing kangaroo, now an australian national icon. From Thomas Smith, 'The Naturalist...

Paul D Stewart / First edition of Erasmus Darwin's 'Zoonomia', Part 1 'The Laws of Organic Life' with section revealing his remarkably prescient 'world without end' text on evolution. Erasmus Darwin was Charles Darwin...

Paul D Stewart / Portrait of Erasmus Darwin (1731-1802) from a picture by Wright of Derby, reproduced with later hand colouring by his grandson, Charles Darwin in 'Life of Erasmus Darwin' 1879 (Ernst Krause co-author)...

Paul D Stewart / Portrait of William Paley (July 1743 - 25 May 1805); stippled engraving published by Joshua Belcher 1810 as frontis to 'The Works of William Paley' Volume I, prepared and with later hand colouring aft...

Paul D Stewart / 1798 illustration of people excavating Mosasaur (Mosasaur hoffmanii) skull; copperplate engraving with its original handcolouring from Volume III of J.L Bertuch's 'Bilderbuch fur Kinder'. The Maastric...

Paul D Stewart / Portrait of Jean Jacques Rousseau, Naturalistic Philosopher (28 June 1712 - 2 July 1778); steel engraving by Thevenin after a design by Gleyre with later colouring, after the 1764 portrait by M. Quent...

Paul D Stewart / Portrait of Georges-Louis Leclerc, Comte de Buffon. French naturalist (7 September 1707 - 16th April 1788). Steel engraving 1833 by Robert Hart with later colouring, from the painting by F.H. Drouais...

Paul D Stewart / Johann Jakob Scheuchzer (born August 2nd 1672 - died June 23rd 1733). Swiss traveller naturalist and geologist. Contemporary Folio size Portrait copper engraving at 59 years old (1731) from Physica Sa...

Paul D Stewart / Portait of Albertus Seba, the Dutch pharmacist and collector of natural rarities, age 66 (b. May 12th 1665 - d. May 2nd 1736). Portrait with tinting, showing off rarities from his collection acquired...

Paul D Stewart / Illustration of a mythical Brazillian animal by Albertus Montanus, 1673. Copperplate from the German edition of his Dutch 'The New World'. A strange creature being pursued by colonials in the jungles...

Paul D Stewart / Portrait of Gaius Plinius Secundus, army commander, naturalist and author (23AD to 25 August 79AD). Copperplate engraving from Andre Thevet's 'Portraits et vies des hommes illustres' publ Guillaume Ch...

Paul D Stewart / Woodcut illustration of Black Rat (Rattus rattus), from Volume 1 Conrad Gesner's 1551 Historiae Animalium (here in his Icones Animalium 1560). The black rat's fleas are believed to have carried plague...

Paul D Stewart / Portrait of Conrad Gesner (or Gessner) Swiss Natural Historian (1516-1565). His major four volume work Historiae Animalium (1551-1558) is considered the beginning of modern zoology. In it he summarise...

Paul D Stewart / Portrait of Conrad Gesner (or Gessner) Swiss Natural Historian (1516- 1565). His major four volume work Historiae Animalium (1551-1558) is considered the beginning of modern zoology. In it he summaris...

Paul D Stewart / Various mid to late 19th Century editions of Darwin's 'Journal of Researches' from his Beagle voyage. After the Origin of Species this book is Darwin's most numerously republished and widely read book...

Paul D Stewart / Anenome chromolithograph illustration by Philip Henry Gosse, from Gosse's 'The Aquarium, an unveiling of the wonders of the deep sea' London Van Voorst 1854. Gosse coined the term 'Aquarium' and was a...

Paul D Stewart / 'Ancient Wrasse' chromolithograph illustration by Philip Henry Gosse, from Gosse's 'The Aquarium, an unveiling of the wonders of the deep sea' London Van Voorst 1854. Gosse coined the term 'Aquarium'...

Paul D Stewart / 'Starfish' chromolithograph illustration by Philip Henry Gosse, from Gosse's 'The Aquarium, an unveiling of the wonders of the deep sea' London Van Voorst 1854. Gosse coined the term 'Aquarium' and wa...

Juergen Freund / Naturalist examines underside of horseshoe crab {Limulus polyphemus) Florida USA

Paul Williams / Naturalist and presenter Chris Packham during filming of the BBC programme 'Animals Guide to Britain', Epping Forest, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham with Ellie, a trained Northern goshawk (Accipiter gentilis), during filming for BBC programme 'Animals Guide to Britain', 2010.

Paul Williams / Naturalist and presenter Chris Packham with Ellie, a trained Northern goshawk (Accipiter gentilis), during filming for BBC programme 'Animals Guide to Britain', 2010.

Paul Williams / Naturalist and presenter Chris Packham holding a European hedgehog (Erinaceus europaeus) during filming for BBC programme 'Animals Guide to Britain', 2010.

Paul Williams / Naturalist and presenter Chris Packham holding a Stag beetle (Lucanus cervus) during filming for BBC programme 'Animals Guide to Britain', Richmond Park, London, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham during filming for BBC programme 'Animals Guide to Britain', Epping Forest, Essex, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham during filming for BBC programme 'Animals Guide to Britain', Epping Forest, Essex, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham during filming for BBC programme 'Animals Guide to Britain', Epping Forest, Essex, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham during filming for BBC programme 'Animals Guide to Britain', Epping Forest, Essex, UK. 2010.

Paul Williams / Naturalist and presenter Chris Packham during filming for BBC programme 'Animals Guide to Britain', Epping Forest, Essex, UK. 2010.

Alex Hyde / Photographer Alex Hyde exploring the forest for insect species. Andasibe-Mantadia National Park, Madagascar. 2009