Nest Site Selection
Throughout western North America, Red-naped Sapsucker (Sphyrapicus nuchalis) nests have been described primarily in trembling aspen (Populus tremuloides) with decay-softened wood. Heart-wood decay is reported to infect the roots of most aspens that red-naped sapsuckers choose to excavate for nesting.Red-naped Sapsucker's typically excavate their first cavity relatively close to the ground and over subsequent years make progressively higher excavations. Most (68%) nest trees were live and 75% had broken tops. Western larch (Larix occidentalis) and birch were greatly over utilized compared to their availability.
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