Date: 09/04/2025

Number: 16

1851 Hours
16 monarchs on North-Northeast side of a common hackberry (Celtis occidentalis), clustered together, 4 meters above the ground.

64 degrees F (17.78 C). No wind during observation but forecast at 6 mph from the southwest. RH 54%. Sunny, but the sun is going down on horizon.

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

Wilmington, IL

Latitude: 41.3 Longitude: -88.1

Observed by: Mike
Contact Observer

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