Montana Field Guide

Hairy Woodpecker - Picoides villosus

A medium-sized woodpecker with (in most areas) a white back, white-spotted black wings (spotting is reduced in Rocky Mountains), a relatively large bill, white underparts, and a black head with two large white bars on each side; tail is black centrally, white on the sides; plumage that is white in most of the range is pale gray-brown in the Pacific Northwest; adult males have a red bar across the back of the head, young males have an orange- or red-streaked crown; juveniles (particularly in Maritime Provinces) have some dark barring on the bank and flanks; average length 24 cm (NGS 1983).

Differs from the downy woodpecker in larger size (average length 24 cm vs. 17 cm), larger bill (about as long as head vs. obviously shorter than head), absence of black bars or spots on outer tail feathers (downy generally has spots), and sharper call note (peek! vs. pik). differs from three-toed and black-backed woodpeckers in lacking dark barring on the sides (may be present on flanks of juveniles).

Montana Range

Migration not observed per se, although vertical migration to valleys is seen in late Sep (Skaar 1969).

In forest burns near Msla, birds chose larch over Doug fir and ponderosa pine for nesting (Harvey 1982). Primarily a forest bird; widely distributed in regions where mature woodlands prevalent. Also occurs in small woodlots, wooded parks, cemeteries, shaded residential areas, and other urban areas with mature shade trees, but often scarce within these habitats (Jackson, Ouellet, and Jackson. The Birds of North America, No. 702, 2002).

Tree surface and subsurface arthropods and a diversity of fruits and seeds. Readily comes to feeders (Jackson, Ouellet, and Jackson 2002).

In Glacier NP birds were found feeding on an epidemic popu- lation of Mtn pine beetles. Of 8 nesting pairs, one nested in lodgepole pine, the rest in aspen.

Cavity nester. In western North America, more often in large dead stubs or in some areas in aspen with fungal decay. Eggs are oval to elliptical-oval, shiny white in color and somewhat translucent when fresh. Two independent studies list clutch size mean as 3.93 eggs and 4.09 eggs (Jackson, Ouellet, and Jackson 2002). Near Fortine, young in nests seen from May 18-Jun 26; flying young seen Jun 28 (valleys) and Jul 27 (mtns). Statewide, nesting records are for Jun (Davis 1961).