| BEWICK | With a species of swan named after him, the wood engraver and naturalist who penned A History of British Birds (6) |
| SWAN | A waterfowl with a species named after an engraver and naturalist who created the Chillingham Bull woodcut; or, a literary word for a bard/poet (4) |
| DURRELL | Gerald -, naturalist who penned My Family and Other Animals (7) |
| RAFFLES | With an ant, butterfly fish, horse race, woodpecker and the world's largest flower named after him, a statesman and naturalist who founded Singapore, the Zoological Society of London and London Zoo (7 |
| GREENAWAY | Illustrator of "toy books", including Marigold Garden, Mother Goose and Under the Window, who was the daughter of an engraver and a milliner, and a friend of John Ruskin (9) |
| JEKYLL | Horticulturist with a species of fragrant English rose named after her who created some of the garde |
| DURER | German engraver and painter whose works include the Adoration of the Magi, Feast of the Rosary, The Four Apostles and The Nativity, from The Small Passion (5) |
| HAZEL | Associated with a species of dormouse, an often coppiced tree with filberts represented in heraldic avellane crosses and with catkins or lamb's-tails in spring; or, the greenish-brownish colour of sai |
| POPPY | Wild flower with a species synonymous with remembering those who died during the First World War, depicted on the coat of arms of the Royal College of Anaesthetists (5) |
| HUGHES | Novelist friend of Dylan Thomas who penned A High Wind in Jamaica and the Human Predicament series comprising The Fox in the Attic and The Wooden Shepherdess (6) |
| ADAMS | Former RSPCA president who penned A Nature Diary and a tale following the lagomorphic travails of the leporids of Watership Down (5) |
| MAGELLAN | Explorer with a species of penguin named after him |
| SASSOON | Author and poet who penned a trilogy comprising Memoirs of a Fox-Hunting Man, Memoirs of an Infantry Officer and Sherston's Progress |
| WAUGH | Schoolmaster-turned-satirical novelist who penned A Handful of Dust and the book subtitled The Sacred & Profane Memories of Captain Charles Ryder (5) |
| CHESTERTON | "Prince of paradox" and polymath who penned a series of 53 stories featuring the puzzling priest-detective of Kembleford, Father Brown (10) |
| SIR | Artist, yachtsman and naturalist, a founder of the Wildfowl and Wetlands Trust and the World Wide Fund for Nature (3,5,5) |
| PETER | Artist, yachtsman and naturalist, a founder of the Wildfowl and Wetlands Trust and the World Wide Fund for Nature (3,5,5) |
| SCOTT | Artist, yachtsman and naturalist, a founder of the Wildfowl and Wetlands Trust and the World Wide Fund for Nature (3,5,5) |
| THOMASBEWICK | A swan and a wren were named after this wood engraver |
| CUVIER | French zoologist and naturalist who founded the sciences of palaeontology and comparative anatomy (6) |
