Woodpecker feeding on Engelmann spruce beetle in windthrown trees
By: Paul H. Baldwin.
Contributors: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Series: Research note RM -- 105.
Publisher: Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1968
Place of publication: Fort Collins, Colo
Language: eng
Subjects: Woodpeckers; Engelmann spruce -- Diseases and pests -- Biological control -- Colorado; White pine weevil
Notes: Caption title.

Includes bibliographical references.