Date: 09/02/2025

Number: 16

16 monarchs total in common hackberry (Celtis occidentalis).

9 monarchs in a cluster in branch, 6 meters above the ground on the Northeast side.
7 monarchs on a branch 10 meters above the ground on east side of tree. Initial count was 13, but 4 monarchs landed with a cluster as we recorded observations.

73 degrees Fahrenheit (22.78 C). RH 55%. Slight breezes from northwest, up to 4 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
Contact Observer

The observer's e-mail address will not be disclosed.
Contact will be made through a web-based form.