Details of Extensive Movements by Minnesota Wolves (Canis lupus)
Introduction
Some gray wolves (Canis lupus) travel to areas over 800 km away from
their packs (Mech and Frenzel, 1971; Fritts and Mech, 1981; Fritts, 1983; Messier,
1985; Mech, 1987). Until recently it has been technologically or financially
difficult to determine the detailed routes of these wolves because of the distances
involved. Often, the only information available is the starting point based
on where a wolf was originally captured and marked and the ending point based
on a capture, road-kill or other type of recovery reported later (Berg and Kuehn,
1982; Ballard et al., 1983; Fritts, 1983; Mech et al., 1995; Wydeven
et al., 1995). Recently, however, newer technology such as satellite
tracking (Fancy et al., 1988; Ballard et al., 1995) and Global
Positioning System (GPS) collars suitable for wolves (Merrill et al.,
1998) have yielded detailed descriptions of wolf routes. These more detailed
descriptions allow a better understanding of wolf travels and extraterritorial
movements and suggest new questions about such movements (Mech, 1995). Using
GPS, satellite and aerial VHF telemetry, we provide descriptions of four wolf
travel routes.
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