The annual winter monarch butterfly migration, which has seen steep declines in recent years, seems to be making a comeback. Biologists are encouraged and confused by the trend.
Monarch butterfly population in California at critically low
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See monarch butterflies in all their glory on this California road
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Rebroadcast: How to save the endangered monarch butterfly
Monarch Butterflies Migrate 3,000 Miles
Get the product you wantAnnual migration of monarch butterflies in California shows sign of resurgence : NPR, picture of a butterfly
Monarch Butterflies Born In Captivity Have Trouble Migrating South
Where to See the Monarch Butterflies in California
Monarchs are on the rise in California. Is the crisis over? - Los