Butterfly flight seasons in Wisconsin from 60,851 research-grade iNaturalist observations. July has the most activity.
By month
Wisconsin butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Wisconsin
Monarch
Small White
Silver-spotted Skipper
Red Admiral
Eastern Tiger Swallowtail
Black Swallowtail
Great Spangled Fritillary
Karner Blue
Mourning Cloak
Eastern Tailed-Blue
Viceroy
Eastern Giant Swallowtail
American Lady
Eastern Comma
Fiery Skipper
Red-spotted Admiral
