Butterfly flight seasons in Michigan from 64,407 research-grade iNaturalist observations. July has the most activity.
By month
Michigan butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Michigan
Monarch
Red Admiral
Silver-spotted Skipper
Eastern Tiger Swallowtail
Small White
Black Swallowtail
Peck's Skipper
Mourning Cloak
Spicebush Swallowtail
Viceroy
Red-spotted Admiral
Eastern Giant Swallowtail
Great Spangled Fritillary
Northern Pearly-eye
American Lady
Little Wood Satyr
