Royce Blitzer (@iowabiologist) tracks migration of the vanessa butterflies and recently had a note on the 2021 migration pattern in the US midwest:
https://www.inaturalist.org/projects/vanessa-migration-project/journal/50474-red-admirals-arriving-in-the-upper-midwest

There is a great profile of the long-term project by Jessica Linton and Ryan Norris to reintroduce the Mottled Duskywing to Pinery Provincial Park in today's Globe and Mail:

https://www.theglobeandmail.com/canada/article-endangered-mottled-duskywing-to-be-reintroduced-in-ontario/