Here are some of his notable works:
* "Muskrats and Marsh Management" (1946): This book is considered a classic in the field of wildlife management. It provides a detailed account of the ecology, behavior, and population dynamics of muskrats.
* "The Population Ecology of Muskrat on the Upper Mississippi River" (1963): This is Errington's magnum opus, presenting his findings on the long-term study of muskrats on the Mississippi River. It's a seminal work in population ecology and wildlife research.
* "Of Men and Marshes: A Personal Account of Ecology" (1957): This is a more accessible work that describes Errington's life and work, emphasizing the importance of ecological understanding in managing natural resources.
In addition to these, Errington published numerous scientific articles and reports throughout his career, focusing mainly on the ecology of various wildlife species, particularly those inhabiting wetlands. He is considered a pioneer in the field of ecological research, emphasizing the importance of long-term studies and understanding the complex interactions within natural ecosystems.