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Western Monarch Count Turns 30

People in jackets and backpacks look up through binoculars in an autumn forest while one person points skyward.
Celebrating three decades of overwintering surveys!
Isis Howard / Xerces Society

Join Community Science

Monarch illustration
Help us study monarch butterflies, bumble bees, and fireflies
Xerces Society

Join a Bumble Bee Atlas

Two hands holding bumble bees
You can catch and release bumble bees with us to help collect data!
Xerces Society

Help Bring Back the Pollinators

BBTP illustration
Commit to our four steps for protecting pollinators
Illustration: Maya Hutagalung and Madison Sankovitz

Protect invertebrates with science-based action.

The Xerces Society for Invertebrate Conservation is an international nonprofit organization that protects the natural world through the conservation of invertebrates and their habitats. As a science-based organization, we both conduct our own research and rely upon the most up-to-date information to guide our conservation work.

Our Work

Close-up macro shot of a monarch butterfly's head and proboscis probing milkweed flowers, showing its black, white-spotted body, coiled antennae, and the edge of an orange-and-black wing

Protecting Pollinators

Working with partners to expand habitat and advance the science of pollinator conservation.

Support Pollinators→

A Xerces Ambassador holds up an illustrated booklet at a Xerces Society outreach table covered with brochures, specimen jars, and a sign-in clipboard, while a visitor leans in to look

Engaging Community

Sharing stories and solutions to inspire action for invertebrates and the ecosystems they sustain.

Share the Science →

Side view of a common eastern firefly (Photinus pyralis) perched on the tip of a green leaf, its yellow-green abdominal light organ glowing at the base of its folded wings

Conserving Endangered Species

Engaging in research, community science, and advocacy to protect at-risk species and habitats.

Protect Invertebrates →

Three researchers in wetsuits and snorkel masks wade waist-deep in the North Fork Umpqua River below a bridge, collecting and examining freshwater mussels in mesh bags

Building Knowledge

Engaging volunteers to collect vital data that drives invertebrate conservation research and action.

Join the Research →

A fuzzy bumblebee clings to the side of a round, spiky white buttonbush (Cephalanthus) flower cluster, its wings folded as it forages among the pin-like blossoms

Reducing Pesticide Use & Impacts

Reducing reliance on pesticides by supporting the diverse natural systems that reduce pest problems.

Learn About Solutions →

A man speaks at a podium with a "Protect Our Pollinators" sign, surrounded by supporters — some in beekeeper veils — holding yellow signs reading "Protect Our Pollinators!" and "Support Our Farmers!" at a statehouse press event

Advocating for Change

Shaping policies and practices at every level to create a world where invertebrates can thrive.

Take Action →

Become a Member.

Individual gifts fuel our research, advocacy, and hands-on conservation. Join the Xerces Society today to protect the creatures that sustain life on Earth—and receive our exceptional, biannual magazine, Wings: Essays on Invertebrate Conservation.

Support cutting-edge research and science
Strengthen advocacy and policy change
Mobilize outreach and education

Latest News

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Discovering an Endangered Rusty Patched Bumble Bee Nest in Iowa

When Sarah Nizzi happened upon the nest of an endangered rusty patched bumble bee in Iowa this spring, it turned into a golden opportunity for conservation research.

Discovering an Endangered Rusty Patched Bumble Bee Nest in Iowa

What to Watch as the Days Get Shorter

When days get shorter, it's a great time to curl up and delve deeper into the world of invertebrates with our experts at the Xerces Society. We’ve put together a watch list for cozy fall days.

What to Watch as the Days Get Shorter

Everything You Need To Know About Visiting California's Overwintering Monarchs

A remarkable phenomenon unfolds along the California coast each fall — and you can witness it yourself!

Everything You Need To Know About Visiting California's Overwintering Monarchs