The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...

Many pollinators, including butterflies ... they have reddish bodies with black and brown wings surrounded by bands of white and tan. As North America's largest moth, the adults have wingspans ...