American botanist and ornithologist (born 1928).
Dale Allen Zimmerman (June 7, 1928 – November 10, 2021) was an American naturalist noted primarily for his contributions to ornithology, and, to a lesser degree, botany and lepidopterology. He was, at the time of his death, an emeritus professor at Western New Mexico University, and was best known for his 1996 field guide entitled Birds of Kenya and Northern Tanzania and his 2015 memoir, Turaco Country. Zimmerman was born on June 7, 1928, in Imlay City, Michigan. He developed interests in birds, insects, and Africa during his childhood, and frequently visited the University of Michigan Museum