Monarch butterfly spotted migrating through Manhattan

November 1, 2026

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butterfly was recorded on October 31 at State Street and Bridge Street, Manhattan.^1, 2 The species is proposed for threatened listing under the Endangered Species Act and is currently in its autumn migration phase toward Mexican overwintering grounds.¹

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More about Monarch

Monarch butterfly spotted late in fall migration

November 3, 2026

A butterfly was recorded on 2026-10-27 in San Francisco, during the late phase of fall migration toward California coastal overwintering groves. Migration peaks around October 18 but continues through December, with this observation documenting passage still occurring nine days past the typical peak. The species is proposed for federal Threatened listing and represents a native insect moving through the peninsula's urban habitat en route to winter sites.