Date: 09/20/2016

Number: 187

Observed 187 monarchs between 6:15 pm and 7:00 pm flying from a wildflower field into a tree line that borders the north side of the field. Roosts formed primarily on the north side of the trees. Temp was in the upper 70's with a low of 66 degrees expected overnight. Winds out of the ESE at 2 mph.

Heyworth, IL

Latitude: 40.3 Longitude: -89

Observed by: S
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