Monarch butterfly population on the rise

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Data pix.

After years of decline, the butterfly migration to Mexico has jumped.

According to the Mexico National Commission of Protected Natural areas, the monarch population has increased by more than 250 percent this season.

Conservationists are optimistic but say the butterflies are still at risk.

20 years ago their migration flight covered more than 40 acres.

Last December, the butterflies covered only ten acres.


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