Date: 09/02/2025

Number: 11

1908 Hours

Total = 11

Cluster of 11 monarchs, 6 meters above ground in a common hackberry (Celtis occidentalis) on the southeast side of tree.

73 degrees Fahrenheit (22.78 C). RH 57%. Slight breezes from northwest, up to 3 mph.

Adjacent to Henslow Trail, near Iron Bridge Trailhead, Iron Bridge Prairie Restoration, Midewin National Tallgrass Prairie (U.S. Forest Service).

Wilmington, IL

Latitude: 41.4 Longitude: -88.1

Observed by: Mike
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