Based on 1,822 research-grade iNaturalist observations in Connecticut, Eastern Tiger Swallowtail is most often recorded in August; in Connecticut it behaves like a summer visitor / breeder. It ranks #2 among butterflies recorded in the state in our data.
Papilio glaucus
Eastern Tiger Swallowtail in Connecticut by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Connecticut in August
Monarch
Zabulon Skipper
Spicebush Swallowtail
Peck's Skipper
Silver-spotted Skipper
Red-banded Hairstreak
Small White
Huron Skipper
Places to look in Connecticut
Botanical GardenConnecticut College Arboretum
Botanical GardenMarsh Botanical Garden
State ParkGillette Castle State Park
State ParkHammonasset Beach State Park
State ParkBigelow Hollow State Park
State ParkDinosaur State Park and Arboretum
FAQ
When does Eastern Tiger Swallowtail appear in Connecticut?
Mainly July–August, with the most records in August.
How common is Eastern Tiger Swallowtail in Connecticut?
It ranks #2 by number of iNaturalist observations among butterflies in Connecticut (1,822 records in our sample).