The selective elimination of silver foxes in Eastern Canada
Elton’s collected data on the frequency of silver and cross foxes killed in several districts of the Quebec peninsula are discussed. The fall in the percentage of silver-fox skins can be explained if the annual rate of killing of silver foxes exceeds that of red and cross foxes by 3–4% in Labrador and Ungava, by 2–3% in the Eastmain district. There is no evidence that cross foxes are killed in greater proportions than red foxes. The annual rate of killing of red foxes is probably of the order of 10% or even more. The different colour varieties cross fairly freely.
Volume 100, 2021
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