Date: 09/01/2025

Number: 5

1910 Hours
4 monarchs on same branch of common hackberry (Celtis occidentalis), about 7 meters above ground on south side of tree. 1 additional monarch on south side of tree at 6.5 meters, below the group of 4.

71 degrees Fahrenheit (21.67 C). Slight breezes from Northeast at 6 mph. RH 58%. Sunset scheduled for 1924 hours.

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

Wilmington, IL

Latitude: 41.4 Longitude: -88.1

Observed by: Mike
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