Date: 08/27/2003

Number: 1

Mr. Paul Viger counts monarchs daily at his site in
Campbell, Minnesota. The first 18 butterflies appeared on August 17 this
year and numbers had climbed to 82 butterflies as of August 27.

At any overnight
roost, the number of visiting monarchs tends to rise and fall from one
night to the next.Take a
look at the data he collected during the Fall 2001 season. What relationship
do you see between wind and migration? Why do you think monarchs behave
this way? See: Analyzing
Data From a Fall Migration Roost

How many tagged monarchs can you see at this roost?

Campbell, MN

Latitude: 46.1 Longitude: -96.4

Observed by: Paul
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