Jim Gilbert
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  • Monarch Butterfly Migration Update: May 20, 1997

    Jim Gilbert

    We have only 9 monarch butterflies to report today! Why so few? The chart below shows the number of sightings reported each week since the migration began in March. Why do you suppose the number dropped so much this week? How many reasons can you think of that might explain this?

    Dates # Monarchs
    May 14-May 20 9
    May 7-May 13 37
    April 30-May 6 25
    April 23-April 29 23
    April 16-April 22 32
    April 9-April 15 20
    April 2-April 8 22
    March 26-April 1 25
    March 18-March 25 24
    March 12-March 17 7
    Before March 12 7

    We Need Your Help!
    Although the school year is almost over, we will continue to collect monarch sightings until the butterflies have reached the end of their trail. Please watch for monarchs and report the FIRST one you see this spring:

    How to REPORT a Monarch Sighting:
    On the left-hand side of this page you'll see an owl button. Simply press the button and a FIELD DATA FORM will appear. If you have any trouble using this system, send a message to our feedback form We'd be happy to help you!

    The Next Monarch Butterfly Migration Update Will be Posted on May 27, 1997