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Fall Monarch Migration Map Archives
Location of Overnight Roosts
2004 to present
(Spring Migration | Milkweed | Fall Migration)

These maps show when and where people reported overnight roosts during fall migration. The maps reveal the timing of peak migration from Canada to Mexico.
Monarch Butterfly Migration Map: Fall Roosts, Fall 2012 Monarch Butterfly Migration Map: Fall Roosts, Fall 2012
All Years
Fall 2002-present
animation | map | data
Fall 2013
animation | map | data
Fall 2012
animation | map | data
Fall migration 2011: map of overnight roosts Fall migration 2010: map of overnight roosts
Fall 2011
animation | map | data
Fall 2010
animation | map | data
Fall 2009
animation | map | data

Fall 2008
animation | map | data
Fall 2007
animation | map | data

Fall 2006
animation | map | data

More Fall Maps
These maps only show fall migration roosts. See Past Seasons for more maps
.
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?
  • List all the factors you think might cause the migrations to be different?
  • List all the factors that might cause the data to be different?
  • What do the maps tell you about monarch migration?

 

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