The hotter conditions produced more potent toxins in the milkweed. But the researchers said that surprisingly, the parasitic ...

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

The Western Monarch Count is underway, a community science project that aims to understand population changes for the orange butterflies.

Pacific Grove is known as ‘Butterfly Town USA’ for its role as an overwintering spot. As the insect’s population plummets, residents are coming to its rescue ...

We have been encouraging our backyard milkweed to grow ever since we moved over five years ago. I have friends who have issues with the aggressive growth of milkweed. We don’t have this problem. We ...

While I suspect the majority of people here in Texas have seen a monarch butterfly, most probably don’t know that they make ...

Counters reported finding only two monarch butterflies at Ellwood East during the latest overwintering butterfly count in Goleta on Monday.  There were no ...

An injured butterfly can now fly after a wing transplant from a dead insect. The monarch butterfly was brought to Sweetbriar ...

Monarch butterflies (Danaus plexippus) appear to be declining not just in North America but also in Australasia. Could this ...

A Camarillo nonprofit founder believes a monarch butterfly preserve could be located where mature eucalyptus trees were cut ...

The annual migration south for monarch butterflies peaks in late September. Here's how to watch for the regal butterfly.