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Habitat use by porcupines (Erethizon dorsatum) in central Massachusetts: Effects of topography and forest composition
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ABSTRACT.-During 1991-1993 we radio-collared and monitored 50 porcupines (Erethizon dorsatum) on two study sites in central Massachusetts to quantify habitat use. During summer, porcupines were found resting mostly on tree limbs (=>80% of locations) in daylight hours. During winter, they rested mostly in dens (e.g., rock caves, cavities in trees) (=>70%) in daylight hours. Where talus was abundant, porcupines rested in dens consisting of rock caves (90%). Where talus was absent, they rested in cavities in trees (50%) more than rock caves (27%). During summer, their use of oaks (Quercus ...
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