His work included field studies in wetlands, wildlife populations and keeping habitats intact.

In the early 1930s, Errington realized that hunting restrictions did not stop North American wildlife from declining.

Errington married Carolyn Storm in 1934, who graduated from law school and taught English.

In the early 1930s, Errington and other conservationists realized that hunting restrictions did not stop North American wildlife from declining.

In what ecologists James A. Pritchard, Diane M. Debinski, Brian Olechnowski and Ron Vannimwegen described as his "most significant intellectual contribution", Errington's work redefined predation.

[5] Prior to Errington's research, hunters thought that the less predators in an area would lead to more wild game.

[1] Errington was concerned that growing human populations could increase demand for natural resources.

[5] After Errington died on November 5, 1962, Storm used his unfinished manuscripts to write Of Predation and Life in 1967, The Red Gods Call in 1973, and a poem collection titled A Question of Values in 1987.