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Urquhart Tagging Data Summarized

This map shows the significant recaptures (58) from F. A. Urquhart's Monarch tagging study, as reported in his 1960 book, The Monarch Butterfly (Toronto: University of Toronto Press, 361 pp.).

In contrast to the Monarch Watch tagging, a large majority of Urquhart's tagging was done in the vicinity of Toronto, Ontario. Consequently, this map shows a focal point pattern, where there are many recovery sites for a single tagging site. It is interesting to note that there are several short-distance movements to the SE, a pattern we have seen before among Monarchs near the east coast, but do not yet understand. Nevertheless, most of these seem to be moving to the S and SW.

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