Date: 09/01/2015

Number: 50

A pre-dusk walk (9/2) down a country lane with hayfield on one side and mixed forest on other side. My dog was walking ahead of me and as it passed trees, disturbed monarch butterflies would fly out and away from their tree perches. About 10-15 at a time. I lost count, there were so many! I've never experienced anything like this before. The same walk the following evenings yielded no sightings of monarchs.

Editor's note: We've re-dated this report from 9/02 to 9/01, the night the roost formed.

Grantsburg, WI

Latitude: 45.8 Longitude: -92.7

Observed by: Janeen
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