Monarch Fall Roost
Sightings report image

Date: 09/15/2021

Number: 2500

Goose Lake Prairie State Park. Second picnic area. Trees were literally dripping with Monarchs early morning 9/15/21. Best guess, difficult to get an accurate count.

[Additional information and photo contributed by observer, added by Journey North, 09/16/21]:

They were first seen on 9/8/21 as indicated by a friend. The monarchs have been in a circular picnic area with a variety of trees including Oak, Linden, Walnut. The area is somewhat sheltered. The area is surrounded by prairie filled with Goldenrod and other prairie plants now in bloom.

Morris, IL

Latitude: 41.4 Longitude: -88.3

Observed by: William
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