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