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Karel Hendrik Voous PhD, MA (23 June 1920, Huizen – 31 January 2002, Huizen) was a Dutch ornithologist and author.
He was Secretary-General (1966–1970) and Honorary President (1990–1994) of the International Ornithological Committee.
Books in English
- On the history of the distribution of the genus Dendrocopos (1947)
- Birds observed and collected during the whaling expeditions of the "Willem Barendsz" in the Antarctic, 1946–1947 and 1947–1948 (1950)
- Owls of the Northern Hemisphere
- List of Recent Holarctic Bird Species
Books in Dutch
- Afwijkende populatie koolmezen
- Phylloscopus Bonelli Bonelli in Nederland Gevangen
- Roofvogels en Uilen van Europa