. The domesticated silver fox. Silver fox. >s^'.y ih V^^=^=--- -^^r^y^- ^.:.T-^ ;:>c â ;7T^ ⢠v^^'ro:^^;^ WL Fig. 5.âVertical longitudinal section of barrel den. escape when the cover is raised. A sheet of burlap tacked to one side of the screen-door frame and spread over the netting when the covers are raised for ventila- tion will keep out air currents and light. At the entrance hole is an elbow spout, 2| feet in the shorter arm and 6 feet in the longer. The large den shown in figures 7 to 9 has advantages not found in barrel dens. It has double walls, the interspaces being lined with


. The domesticated silver fox. Silver fox. >s^'.y ih V^^=^=--- -^^r^y^- ^.:.T-^ ;:>c â ;7T^ ⢠v^^'ro:^^;^ WL Fig. 5.âVertical longitudinal section of barrel den. escape when the cover is raised. A sheet of burlap tacked to one side of the screen-door frame and spread over the netting when the covers are raised for ventila- tion will keep out air currents and light. At the entrance hole is an elbow spout, 2| feet in the shorter arm and 6 feet in the longer. The large den shown in figures 7 to 9 has advantages not found in barrel dens. It has double walls, the interspaces being lined with building paper and filled with saw- dust. The exterior may be battened, shingled, or covered with tarred paper. It is large enough to give the foxes loung-. Fio. fl.âExterior view of a barrel den (see figs. 3-5). ing room outside the nest compartment, and is arranged so as to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dearborn, Ned, 1865-. Washington, D. C. : U. S. Dept. of Agriculture


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