The Endangered Species Act is no help yet.

PACIFIC GROVE — Pacific Grove is an idyllic place to go for rest and relaxation. West Coast Monarch butterflies would agree.

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

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

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 ...

Monarch butterflies have always been remarkably resilient. Every fall, these delicate orange-and-black travelers set out on a journey so improbable it borders on myth, flying some three thousand ...

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

Mid-season surveys have turned up roughly 8,000 monarchs across the western range, based on figures compiled by count ...

The Western monarch population has plunged more than 95% since the 1980s, and has a more than 99% chance of extinction by 2080. Western monarchs primarily spend winters along the California coast.

It is now the late season for butterflies in Goleta groves, and the picture is dismal. Only two butterflies were recorded in ...

Monarch butterflies are well-known and beloved migratory pollinators in North America. NNehring via Getty Images For generations, monarch butterflies have traveled thousands of miles across North ...

The anecdotes abound this year — friends reporting magical clusters of monarch butterflies on their walks, dozens of organizations offering free giveaways of native milkweed and projects to restore ...