The numerical response of woodpeckers to insect prey in a subalpine forest in Colorado

Publication Type:

Journal Article

Authors:

Koplin, James R.

Source:

Condor, Cooper Ornithological Society, Volume 71, Issue 4, p.436-438 (1969)

Call Number:

A69KOP01IDUS

URL:

https://sora.unm.edu/node/101877

Keywords:

Abies lasiocarpa, Dendrocopos pubescens, Dendrocopos villosus, Downy Woodpecker, Engelmann spruce, Hairy Woodpecker, lodgepole pine, Picea engelmannii, Picoides tridactylus, Picoides villosus, Pinus contorta, subalpine fir, Three-toed Woodpecker

Abstract:

During the fall of 1964 resident populations of Northern Three-toed, Hairy, and Downy Woodpeckers concentrated upon bark beetles attracted to 10 acres of northern Colorado subalpine forest killed by a fire in 1962. The numerical response of the woodpeckers was graded; that of the Northern Three-toed Woodpecker was the most pronounced and that of the Downy Woodpecker least pronounced. Evidence is presented suggesting that the graded response was related to the foraging adaptations of each species of woodpecker.