Date: 09/19/2019
Number: 3000
Late afternoon I began to notice many flying overhead about 50 feet up in my yard. I went to the nearby forest preserve and witnessed thousands migrating, some high some lower heading WSW for 1 1/2 hours. There were so many I tried to count by tens but lost track. I would have to estimate between 3000-5000 from 5:00 to 6:30 p.m.
Mokena, IL
Latitude: 41.5 Longitude: -87.9
Observed by: Kathy
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