Colymbia is a book written by Robert Ellis Dudgeon and published in 1873. The book is a comprehensive study of the bird species known as the loon, focusing specifically on the common loon (Gavia immer) found in North America. Dudgeon, a Scottish physician and naturalist, provides detailed descriptions of the loon's physical characteristics, behavior, and habitat, as well as its vocalizations and breeding habits. He also includes observations on the...