Dating help for butterflies

That's nice. Somewhat costly, but nice.

Excerpt from News24:

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.

Someone estimated that 10 000 butterflies, depending on how energetic they were, would be trudging or flapping along across the highway.

Bet that helped the environment more than simultaneously partaking in a popularized green movement.