1831 in birding and ornithology


 * Death of Louis Pierre Vieillot
 * Christian Ludwig Brehm publishes Handbuch der Naturgeschichte alle Vögel Deutschlands
 * Second voyage of HMS Beagle commences
 * Adolphe Delattre makes the first of several trips to South America.
 * Johann Friedrich von Brandt appointed director of the Zoological Department at the St Petersburg Academy of Sciences
 * Nicholas Aylward Vigors describes the great Indian bustard
 * "Maison Deyrolle" established in Paris.