John Gould's "Thick-billed Ixulus," found in Nepal and Sikkim, from his Birds of Asia, plate 12.
- Gilbert White (1720-1793)
- Thomas Bewick (1753-1828)
- William Yarrell (1784–1856) — no material yet
- John Gould (1804–1881)
- Francis Orpen Morris (1810-1893)
- Allan Octavian Hume (1829-1912)
- Henry Eeles Dresser (1838-1915) — no material yet
- William Henry Hudson (1841-1922)
- Richard Kearton (1862-1928) and Cherry Kearton (1871-1940)
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Created 5 April 2019