Taiwan has shut a highway lane to traffic, lowered the speed limit and put up protective nets to help a butterfly species cross the road during an annual migration.
From mid-March and for about a month, thousands of milkweed butterflies — which are native to the island off China and have distinct white dots on purple brown wings — fly over a section of freeway in central Taiwan as they move northwards to breed after spending winter in the island’s warmer south.
Before the Taiwan Area National Freeway Bureau took protective measures in 2007, many butterflies were hit on the highways or killed by wind from speeding vehicles.
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