Butterfly flight seasons in North Dakota from 4,109 research-grade iNaturalist observations. July has the most activity.
By month
North Dakota butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in North Dakota
Monarch
Painted Lady
Melissa Blue
Red Admiral
Common Wood-Nymph
Eastern Tiger Swallowtail
Clouded Sulphur
Small White
Common Ringlet
Variegated Fritillary
Common Checkered-Skipper
Long Dash
Viceroy
Eastern Comma
Orange Sulphur
Aphrodite Fritillary
