Joseph Birdsell

Joseph Benjamin Birdsell (March 30, 1908 – March 5, 1994) was an American anthropologist known for his work on Indigenous Australians, which spanned from the 1930s through to the 1970s. He was a long-serving professor of anthropology at the University of California, Los Angeles (UCLA). He is best known for his "tri-hybrid" model of human migrations into Australia, which proposed three distinct waves of racially distinct populations. The "Birdsell model" was popular in the mid-20th century, but was later found to be unsupported by scientific evidence.