Monarch PEAK Migration
Sightings report image

Date: 09/27/2021

Number: 300

Just when we thought monarch migration was almost over, a series of cold mornings (about 50 F) and sunny, warm days allowing monarchs to migrate west along north shore of Lake Ontario. Last week was cold and wet, and I found very, very few monarchs, but yesterday, they were eagerly feeding on New England Aster near Oshawa, east of Toronto on the north shore of Lake Ontario. I tagged 154 monarchs in 5 hours and a colleague 91 in 4 hours. We missed or saw many more, so 300 monarchs is a conservative estimate from this one noteworthy habitat. A colleague further east captured 61 to tag in a purple clover field in 1.5 hours. Glad I ordered extra tags from Monarch Watch! Latest recovery I have had in Mexico was one individual tagged one year on Sept. 27th. For my colleague, Jim, one tagged October 3rd made it to Mexico.

[Report moved from Monarch Adult Sighted to Monarch PEAK Migration by Journey North, 09/30/21]

Whitby, ON

Latitude: 43.9 Longitude: -78.9

Observed by: Donald A.
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