Tumebacillus avium is a species of Gram positive, facultatively aerobic, bacterium. The cells are rod-shaped, motile, and form spores. It was first isolated from faecal sample of a cinereous vulture (Aegypius monachus) from the Seoul Grand Park Zoo, Seoul, South Korea. The species was first described in 2018, and the name is derived from Latin avium (of the birds).
