Kendeigh, Samuel Charles. Bird Population Studies in the Coniferous Forest Biome during a Spruce Budworm Outbreak. Washington, DC: Department of Lands and Forests, Division of Research, 1947.

Kendeigh, Samuel Charles. Bird Population Studies in the Coniferous Forest Biome during a Spruce Budworm Outbreak. Washington, DC: Department of Lands and Forests, Division of Research, 1947.