Fall Monarch Migration Map Archives Location of Overnight Roosts 2004 to present (Also see Spring Migration Map Archives) The maps below show when and where people saw monarchs forming overnight roosts during fall migration. How does the monarch's fall migration compare from one year to the next? Review the maps and answer the questions below. All Years (Fall 2002-present) animation/map/data Fall 2009 vs. 2002-2008 map/data Fall 2009 animation/map/data Fall 2008 animation/map/data Fall 2007 animation/map/data Fall 2006 animation/map/data Additional Fall Migration Maps The maps on this page only show where people reported roosts during fall migration. For additional fall monarch migration maps from past years ("Peak Migration" and "All sightings"), see Maps and Data from Past Seasons Fall 2005 animation/map/data Fall 2004 animation/map/data Try This: Describe the ways that the migrations similar from one year to the next. How are they different? Describe. List all the factors you think might cause the migrations to be different from one year to the next. List all the factors that might cause the data to be different from year to year. Review the lesson, "You're the Scientist: Verifying Data Collected by Peers." Have a classroom discussion, and make a list of questions generated in your class. What do the maps tell you about monarch migration? What don't they tell you?   Education Standards >>