Newly released data shows that the number of monarch butterflies migrating to California this winter is near-record low. "We ...
The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in ...
Monarch butterflies overwintering along the California coast have declined by 96% in a year, with habitat loss, pesticides and extreme heat contributing to their second-lowest population in nearly ...
Are monarch butterflies endangered? Monarch population numbers are falling and it's clear that these butterflies need our ...
From thousands of monarch butterflies painting the skies to massive herds of bison on the move, the U.S. is home to some of the most breathtaking animal migrations on Earth. These incredible journeys ...