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Monarch Fall Roost
Sightings report image

Date: 09/20/2019

Number: 1000

The monarchs were roosting in a couple dozen trees on our property for three days.

Friday September 20th around 3:00 PM we noticed an increased Monarch population flying around our property. We noticed the roost around dusk. The roost increased to around 1,000 Monarchs on Saturday. They left Monday September 23rd in the morning.

We have a 6 acre hay field full of Red Clover that abuts the trees that the roosts were in. They roosted in Silver Maples, White Pines, Blue Spruce, and Black Locust.

Overnight temperatures were in the upper 50's with a south wind. the monarchs shielded from the wind in this location. All Roosts were on the North (downwind) side of the trees.

Magnificent to see

Manhattan, IL

Latitude: 41.5 Longitude: -88

Observed by: Debra
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