Abstract

-Fifteen raccoons were fitted with radio-transmitters and monitored from March 1987 to May 1988; 1091 locations were classified according to occurrence within three available den types: tree cavities, rock outcroppings and ground burrows. Overall use generally reflected availability of dens, but den use varied across seasons and among raccoons of different age and sex. Rock dens were used most often during winter, especially when temperatures fell below freezing; adult males showed the most frequent and consistent use of rock dens. Ground burrows were consistently used more often by juveniles, especially males, as compared to adults. Use of ground burrows by the raccoon population was greatest during autumn. Females consistently used tree cavities more frequently than males; the greatest disparity occurred during summer and was associated with parturition and rearing of young.

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