Black-backed Woodpecker (left). Photograph by Denis Fournier (CC BY 2.0). Three-toed Woodpecker (right). Photograph by David A Mitchell (CC BY 2.0).
The following comments on these two species of northern woodpecker (generically referred to as “three-toed”) are based on observations made during the 1985 breeding season (May 25-July 5) in the spruce-fir habitat along Realty Road in Aroostook County, Maine.
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