Still Journeying North
Reports of monarchs are picking up in Canada. The Upper Midwest remains a hotspot of activity, but migration is slower farther east. And Western monarchs are venturing further north in California and Oregon, with new observations from Utah. More reports of monarchs and milkweed at all life stages are needed!
Eastern Monarch Population
Eastern Monarch Spring 2023 Report #7
The leading edge of migration is still scattered between latitude 43-47°N. Activity remains high in the Upper Midwest and is picking up in Southern Ontario. Farther east, reports are trickling in at a slower pace. And milkweed is emerging near the northern limit of its range in Canada.
Western Monarch Population
Letter from Gail Morris: Western Monarch Spring 2023 Report #10
In the Western U.S., monarchs are expanding their range as they head to their summer breeding grounds. Gail Morris writes, “Monarchs will soon reach the end of their spring migration. They will stay in the local breeding grounds and increase in number over the summer months… Despite a much healthier overwintering monarch population, the key to the summer breeding season will be reflected in the progress of monarchs the next few weeks. Your reports are critical to our understanding of this season’s migration. We urgently need reports of sightings of emerging milkweeds and monarchs in any life-stage.”