Date: 09/06/2025

Number: 25

1853 Hours
25 monarchs on branches of a common hackberry (Celtis occidentalis), 7 meters above ground on east side of the tree.

62 degrees F (16.78 C). Sun starting to send on the horizon. Roost is in complete shade with sunlight only at top of tree.. Winds 6 mph with gusts up to 11 mph from the west. RH 55%, Dew Point 46. Sunset scheduled for 1916 hours.

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.