File:The Canadian field-naturalist (1935) (19896998294).jpg

Title: The Canadian field-naturalist
Identifier: canadianfieldnat1935otta (find matches)
Year: 1935 (1930s)
Authors: Ottawa Field-Naturalists' Club
Subjects:
Publisher: Ottawa, Ottawa Field-Naturalists' Club
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

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80 The Canadian Field-Naturalist (Vol. XLIX is indebted to The Hon. Mr. Fred Alderdice, Prime Minister of Newfoundland, and to Sir Wilfred Grenfell, for their friendly sup- port in getting this arrangement made. 4. Through the kind co-operation of Mr. C. R. Townsend, Factor of the Consolidated Paper Corporation Ltd. at Port Menier, it has been possible to include also a report upon the snowshoe rabbit population of Anticosti. Anticosti is a large island in the Gulf of St. Lawrence and forms part of the province of Quebec. 5. By courtesy of the United States Bureau of Biological Survey, an enquiry was made through the Alaska Game Commission, who who supplied five reports covering large dis- tricts. We wish to thank the former Chief of the Bureau of Biological Survey, Mr. Paul G. Redington, the present Chief, Mr. Jay N. Darling, and the Hon. John W. Troy, Gov- ernor of Alaska for their co-operation; Mr. H. W. Terhune, who arranged the enquiry in Alaska; and Mr. Copley Amory for per- sonnally taking up this matter in Washington on behalf of the Bureau of Animal Popula- tion. The third year's results therefore enable a more complete picture to be presented than has been possible before, in that they have an in- ternational scope, and also cover two islands (Newfoundland and Anticosti) in which snow- shoe rabbits appear to have the same cycle as on the mainland, although they were only introduced in recent years. This is a very im- portant fact to establish, since it would form a fairly conclusive proof that the periodicity of the cycle is controlled by some climatic factor at present little understood — a conclusion supported already by the extraordinarily wide region over which the cycle takes place, and over which it has "kept in step" for at least a hundred years. It is not necessary to repeat in detail the description of methods used. The full ques- tionnaire was printed in the first report for 1931- 32. Since then a question about numbers of birds of prey has been added, in order to link up the snowshoe rabbit work with the ornitho-
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Figure 1.— State of the snowshoe rabbit populations in 1933-34. Dotted areas in Canada are groups of squares overlapped by areas of obseivers reporting relative increase in 1933-34 over 1932-33. Dotted areas in New- foundland, Anticosti and Alaska are actual areas reporting increase. Larger black dots are Hudson's Bay Company posts, etc. Broken lines show main vegetation zones.

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