The Trocaz pigeon is first described by Karl Heineken. Death of Juan Ignacio Molina, who provided the first European account of the birds of Chile, describing thirty-three species. Death of Jean-Baptiste Lamarck, who was an early proponent of evolution, though his proposed mechanisms were largely incorrect. Auguste Drapiez publishes Résumé d'ornithologie ou d'histoire naturelle des oiseaux Johann Georg Wagler writes descriptions of new bird species in Isis, oder Encyclopädische Zeitung published by Lorenz Oken Some are: the russet-throated puffbird, the golden-fronted woodpecker, the pinnated bittern, the chestnut-colored woodpecker, the brown jay, the intermediate egret and the ladder-backed woodpecker George Ord retires from business to devote his time to ornithology. 1829-33 Admiral Sir Edward Belcher "Aetna " survey expedition to North and West Africa. Julien François Desjardins, Charles Telfair, Wenceslas Bojer, and Jacques Delisse, take part in founding the Société d'Histoire Naturelle de l'Île Maurice
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