Climate warming can impact plant quality, which in turn shapes the nutrition and immune defense of insect herbivores like monarch butterflies.

Every year, the World Wildlife Fund Mexico partners with other conservation groups and local citizens to conduct a count of eastern monarch butterflies in their winter home, the Monarch Butterfly ...

Our neighbor Mary has a small patch of milkweed behind her potting shed. It’s shaded by a young sassafras tree, and some Japanese stilt grass is pushing its way in as well. We use neighbor John and ...

I struggled to catch my breath, but it had nothing to do with the 10,000-foot altitude. All around me, millions of monarch ...

Why Do Monarch Butterflies Swarm? Monarch butterflies, like other butterfly species and birds, must migrate to warmer climates during the cold winter months. Monarch butterflies are unique because ...

California's wildlife conservation societies are urging people to come forward to help save these iconic pollinator species.

They’re a brilliant orange sight by the millions as the season changes and we’re not talking about the leaves. This week is all about monarch butterflies. * The story goes that the “monarch” part ...

On a warm summer morning, you’re sitting in your yard enjoying a slow moment, when a flash of color catches your eye. Bright orange and black wings dance through the air before alighting on a purple ...

Their multi-month and multigenerational migration north of about 3,000 miles begins in February or March. Each monarch lives only between two and six weeks. During migration, the female monarch mates, ...