Date: 09/13/2025

Number: 142

142 monarchs across three trees (green ash, box elder, and bur oak). Largest group contained ca. 50 individuals (one side of that group is pictured). Butterflies were observed at ca. 9 pm, ca. 79F with low winds. Earlier in the morning and afternoon, a couple dozen adults were observed nectaring on Liatris. This number is >4x the observed monarchs from last night.

Thomasboro, IL

Latitude: 40.2 Longitude: -88.2

Observed by: Joseph
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