Dale Zimmerman, a professionally trained botanist who also made significant contributions to ornithology, died November 10, 2021. He was a long-time faculty member in the Department of Natural Sciences at Western New Mexico University (WNMU) in Silver City, but in seven consecutive decades from the 1950s to the 2010s, he traveled the globe studying the flora and avifauna on all seven continents. He received the Ludlow Griscom Award from the American Birding Association in 2015 for his contributions to ornithology. He was also an Elective Member (1958) and Fellow (1999) of the American Ornithological Society (AOS).