Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Habitat management for hole-nesting birds in forests of western larch and Douglas-fir.

Abstract

Some 273 active nest trees of 20 bird species were located in western larch (Larix occidentalis)/Douglas fir stands in NW Montana in a study from 1974 to 1976. Larch was preferred despite the greater abundance of Douglas fir. Nearly as many hole nests were in live trees as in snags, but broken tops were highly preferred, as were trees with large d.b.h. Ponderosa pine was also used but not common in the area. Paper birch (Betula papyrifera) and aspen (Populus tremuloides) were heavily used and black cottonwood (Populus trichocarpa) snags were especially attractive to pileated woodpecker (Dryocopus pileatus). Management recommendations are given.