Helmut Sick

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Helmut Sick (10 January 1910 - 5 March 1991), was a German-Brazilian ornithologist.

A prominent ornithologist in Brazil, Sick published more than 200 papers, including his most influential work Ornitologia Brasileira, Uma Introdução (1984), translated into English as Birds in Brazil: A Natural History. He also described new species of Brazilian birds and led scientific expeditions in remote areas in Brazil.

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