Where Are People Watching for Monarchs?
Thinking About Data-collection Methods

Map A

Map B


  • Which map shows parts of the United States that are highly populated?
  • Which map shows where people have reported their monarch sightings?


Journey North tracks monarch butterfly migration based on sightings reported by people.

  • How do you think the population distribution in the United States might affect the number of monarchs reported?


  • Do you think it's accurate to say there are more monarchs in certain parts of the United States or there are more people reporting monarchs in certain parts of the United States?

Something to Think About
When we take a look at maps and data, why is it important to consider data-collection methods? Why is it important to think about how the data was collected?