Jim Gilbert
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  • Spring Monarch Migration
    As of June 17, 1997

    This map shows the extent of the monarch migration as of June 17, 1997. (Click on the map and it will enlarge to a full-screen image.) Special thanks to Carol Gersmehl of Macalester College for producing this map.

    Before March 1 Red
    March 1-March 15 Gold
    March 16-March 31 Brown
    April 1-April 15 Magenta
    April 16-April 30 Yellow
    May 1-May 15 Green
    May 16-May 31 Light Blue
    June 1-June 15 Medium Blue
    June 16 & June 17 Dark Blue
    The FINAL monarch migration map for Spring, 1997 will be provided on July 8th.