Summer home range use by adult marten in northwestern Maine

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Abstract
Home range and habitat utilization data for adult marten were gathered from May to September 1980 in northwestern Maine. Analysis of 455 radio locations of three postlactating females and two adult males showed that overall summer ranges averaged 2.9 km2 for females and 5.6 km2 for males, with females showing preferential use of softwood stands. The frequency distribution of activity radii differed during this period for females but not for males, while use of habitats did not change. Thirty-eight resting sites and dens were located; 6 of 21 sites used by females were identified as maternal dens. All resting sites used by males were in tree canopies, commonly in "witches brooms" (abnormal clumped growth of balsam fir branches caused by rust fungi). Den characteristics are discussed in relation to the presence and development of kits.
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