This Year's Ruby-throated Hummingbird Migration
 Early, Late, or About the Same?

Is this year's Ruby-throated hummingbird migration ahead of, behind, or about the same as it was in the last few years? You be the judge! These maps were made from sightings reported to Journey North.
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April 8, 2004
April 7, 2005
April 6, 2006

How does this year's migration compare?

  1. Click on each map to see a larger one.
  2. Look at the most northern sighting on each map.
  3. Look at the overall leading (northern) edge of the migration on each map.
April 5 , 2007
Journal or Discuss
  • What differences do you notice between this year's Rubythroat migration and those from the past few years?

  • List all the factors you think might cause the migrations to be different from one year to the next.

  • How might Journey North observers' distribution and skills affect how our migration maps look?