Monarch Fall Roost
Sightings report image

Date: 09/06/2021

Number: 1000

For the last 8 days more and more have come to our apple and pear trees (4 trees).

[Journey North contacted observer for more information about this sighting; report moved from Monarch PEAK Migration to Monarch Fall Roost by Journey North, 09/07/21]

[Additional information contributed by observer, added by Journey North, 09/17/21]:
We came up with the thousand fairly easily. We counted the number of monarchs on a small branch on a poplar tree while still in the house so the butterflies were still. We then took that number and counted the clusters around the other trees. Two clusters were easily 300 times the size of the small one - and we had mid size clusters in all directions. That large number only stayed one night, but a few hundred were here at any given time fir ten full days. They all disappeared (other than a few dozen) on September 9th. However, on Sept 13th our numbers were back to a couple hundred. They are all gone now. I tried to report the second group, but the website had a glitch. We have apple and pear trees, which is where I first noticed them. They switched to other trees different days. We have some very large pine trees (long needles) and several very large poplars. They also hung out in smaller quantities on a birch.

Holland, MI

Latitude: 42.8 Longitude: -86.1

Observed by: Carmen
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