Climate warming reduces nectar quality in flowers, leaving migrating monarch butterflies with less energy to survive winter.

Monarch butterflies require milkweed plants as egg-laying sites, but they also migrate long distances every spring and fall, and the route from Mexico to Canada passes through the San Antonio area.

Many butterflies from around the world migrate each year, but no butterfly can match the incredible monarch butterfly migration. In autumn, these orange and black butterflies travel up to 2,000 miles ...

Whether you’re a butterfly fanatic or simply interested in nature, the monarch butterfly is worth a study. Beautiful and serene, monarch butterflies have a unique lifespan. But how long do monarch ...

It's about that time of year for Oklahomans to spot monarch butterflies, the orange-and-black-winged insect known for their twice-yearly migrations across the continent as they pass through the state ...

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 ...

MADISON, Wis. — President Donald Trump’s administration has delayed a decision on whether to extend federal protections to monarch butterflies indefinitely despite years of warnings from ...