The ornithological collection is the largest department of the Ohio Wesleyan University Museum of Natural History. The collection consists of study skins, mounted birds, eggs, nests, skeletons, bones, and feathers. The majority of the study skins and mounted birds are native to Ohio, with several from Australia, Europe, South America, and the Middle East. The egg collection houses specimens from across the United States, in addition to a substantial collection of eggs from Indian birds donated in the 1920s. The collection also includes a selection of wooden birds carved by former professor of zoology, Dr. William D. Stull.