Myriads of bright orange and black monarch butterflies are making their annual 3,000-mile journey from as far north as Canada to southern California and Mexico.
NBC reports that the number of the monarch butterflies has plummeted in recent years. About 35 million butterflies migrated last year compared to a billion in 1996, experts say. Research explain this by the climate change, habitat loss and pesticides.
An organic fertilizer is being spread throughout Mexico’s forests to help protect the butterflies.
The butterfly migration attracts tourists from all over the world.