Date: 09/15/2016

Number: 100

Observed 100 monarchs roosting in a row of trees adjacent to a field of wildflowers as a storm front moved through this evening.

The roosts formed around 6:45-7:15 pm. The first small roost formed on 9/15 and they have continued to form each evening. Overnight temp was in the mid-60's. Winds were ESE at 9 mph. The monarchs were shielded from the wind.

Heyworth, IL

Latitude: 40.3 Longitude: -89

Observed by: S
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