Eugene "Gene" Eisenmann (19 February 1906 – 16 October 1981)[citation needed] was an American and Panamanian lawyer and amateur ornithologist of German-Jewish ancestry.
[citation needed] Eisenmann was born in Panama[citation needed] and, though he was based throughout his adult life in New York City, he returned to Panama almost annually in order to study the birdlife and visit his family.
[3] In 1956, he resigned from the legal profession to pursue his interest in studying the birds of Central America and the adjacent region.
[4] He published over 150 papers on ornithology, and his The Species of Middle American Birds is Volume 7 of the Transactions of the LSNY.
[3] He also co-wrote The Species of Birds of South America with Rodolphe Meyer de Schauensee.