Monarch butterflies

California monarch numbers rebound

November 18, 2021

After a record low last winter, initial counts of western monarch butterflies in California this winter show the population is rebounding. Last winter, the Xerces ...

Watch: Tracking the monarchs to Mexico

April 19, 2019

Before the 1970s, where monarch butterflies overwintered was a mystery. Then researchers succeeded worked with Mexicans to trace the migration to the hills of ...
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