Date: 09/04/2010

Number: 200

hundreds roosting in our backyard tree on Sunday morning (9/5)

Editor's Note: We dated this roost sighting for Sept. 4, the night the roost formed. For consistency, we use the 'first night' date for all roosts even if they are not discovered until the following morning.)We are estimating a minimum of 200 monarchs based on observer’s estimate of “hundreds.”

Colchester, ON

Latitude: 42 Longitude: -82.9

Observed by: Dana
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