Monarch Butterflies

Monarch butterflies at winter sanctuaries in Mexico

The Overwintering Season

1 December 2018

The Overwintering Season

December 1, 2018

What happens month-by-month while the monarchs are in Mexico?

Migration News Fall 2018

Watch the season’s story unfold.

Dr. Lincoln Brower

July 23, 2018

Monarch Butterflies

Farewell, Dr. Lincoln Brower

Image of a monarch butterfly caterpillar eating milkweed.

August 1, 2018

Monarch Butterflies

Fall Migration Starts this Month

Monarch butterflies roosting in Dell Rapids, SD.

August 23, 2018

Monarch Butterflies

Fall Migration is Underway!

Monarch butterflies roosting in Tawas Point, Michigan

August 30, 2018

Monarch Butterflies

Roosts Reveal Pathways

Monarch butterflies nectaring in Rochester, VT

September 6, 2018

Monarch Butterflies

On the Nectar Trail

Monarch Butterflies roosting by Jackie Riley

September 13, 2018

Monarch Butterflies

A Grand Exodus

Monarch in flight

September 20, 2018

Monarch Butterflies

An Endless Parade

Monarch Butterflies Roosting by Arlene Holderness

September 27, 2018

Monarch Butterflies

Riding North Winds

Monarch Butterflies by Elizabeth Fox

October 4, 2018

Monarch Butterflies

Riding Ridges, Traveling Coastlines

Monarch Butterflies by Kelly Bostian, Outdoor Editor of the Tulsa World

October 11, 2018

Monarch Butterflies

Wave After Wave

Monarch Butterflies by Dale Clark

October 18, 2018

Monarch Butterflies

Cold Holds Butterflies Back

"Monarch Butterfly union of three nations," says the road sign near the border.

October 25, 2018

Monarch Butterflies

Crossing into Mexico

Monitoring the Monarch's Arrival in Mexico

November 1, 2018

Monarch Butterflies

Waiting for First Arrivals

Monarchs arriving at winter sanctuaries in Mexico

November 7, 2018

Monarch Butterflies

They're Here!

Monarch butterflies at winter sanctuaries in Mexico

December 1, 2018

Monarch Butterflies

The Overwintering Season

Previous Season – Spring 2018