. Il campo Canadese-naturalista. 422 Il canadese Field-Naturalist Vol. 104 La maggior parte del totale area di pacchi. Interchange-road, fossato e creek piste rose ad angoli di circa 30- 60° dal piano orizzontale. I metodi e i materiali di un "sistema di tane" o "tana" è definito come "le entrate e i tunnel usato regolarmente insieme da un individuo" (Merriam 1971). Ogni singolo ingresso di un burrow sistema è qui definita come un nido entrata. Picchetti di griglia e/o punti di riferimento sono stati usati per fornire punti di riferimento per tracciare la distribuzione del burrow ingressi e Woodch
1772 x 1410 px | 30 x 23,9 cm | 11,8 x 9,4 inches | 150dpi
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. The Canadian field-naturalist. 422 The Canadian Field-Naturalist Vol. 104 most of the total parcel area. Interchange-road, ditch, and creek slopes rose at angles of about 30- 60° from the horizontal plane. Methods and Materials A "burrow system" or "burrow" is defined as "the entrances and tunnels regularly used together by an individual" (Merriam 1971). Any single entrance of a burrow system is herein referred to as a burrow entrance. Grid stakes and/or landmarks were used to provide reference points for plotting the distribution of burrow entrances and Woodchuck movements on similarly marked 1:1250 maps. Woodchucks were live-trapped at burrow entrances in National live-traps, using as bait slices of Macintosh apples, and peanut butter mixed with rolled oats. Trapped Woodchucks were handled in a Halvorson cone (Halvorson 1972) redesigned for Woodchucks (Woodward 1982). A black Nyanzol fur-dye prepared as described by Melchoir and Iwen (1965) was applied to uniquely mark the fur of Woodchucks. The dye remained clearly visible on the underfur for the duration of the season on post-moult individuals. Each captured Woodchuck was permanently marked with two identically numbered No. 3 monel eartags (National Band & Tag Co., Newport, Kentucky). Marked Woodchucks are referred to by their eartage number or "name", sex, and age-class (Ad = adult and j = juvenile). Censusing of Woodchucks was done in the spring (early April to mid-May) and fall (mid- August to mid-September) of 1981. The marked and unmarked individuals present on each parcel were counted. Unmarked and unidentified tagged Woodchucks were carefully observed for subtle natural markings to avoid counting them more than once.. METERS vy Observed Woodchuck movement Ditch /S Culvert £3 Tree, shrub ⢠Tree stump Roads â <^ Graham Creek Woodchuck burrow entrance Location Woodchuck spotted at a burrow entrance (sometimes more than once) Location Woodchuck spotte
