Monarch Butterflies

News Fall 2021

Watch the season’s story unfold.

Monarch Butterfly

August 2, 2021

Monarch Butterflies

Fall Migration Starts this Month

Monarch Butterflies

August 25, 2021

Monarch Butterflies

Get Ready for an Exciting Fall Migration!

Monarch Butterfly

September 1, 2021

Monarch Butterflies

Migration Gaining Momentum

Monarch Butterflies

September 8, 2021

Monarch Butterflies

Monarchs on the Move

Monarch Butterfly

September 15, 2021

Monarch Butterflies

On the Nectar Trail

Monarch roost

September 22, 2021

Monarch Butterflies

Sightings Flowing In

Monarch Butterfly

October 6, 2021

Monarch Butterflies

Taking Flight

Monarch Butterflies

October 13, 2021

Monarch Butterflies

Steady Progress

Monarch roost in Mexico

October 20, 2021

Monarch Butterflies

Spanning North America

Flying monarchs

October 27, 2021

Monarch Butterflies

Closer to Overwintering Grounds

Monarch roost

November 4, 2021

Monarch Butterflies

Arrivals Within the Biosphere Reserve!

Cluster of monarchs at Cerro Pelon

November 10, 2021

Monarch Butterflies

Welcoming More Arrivals

Monarchs at Sierra Chincua

November 17, 2021

Monarch Butterflies

Clusters of Monarchs

Monarch Butterflies

November 24, 2021

Monarch Butterflies

Fall Migration Is Winding Down

overwintering monarchs

December 3, 2021

Monarch Butterflies

Settling in for Winter

Monarchs at El Rosario Sanctuary

December 8, 2021

Monarch Butterflies

Merging and Relocating

overwintering monarchs

December 15, 2021

Monarch Butterflies

Large Colonies

Previous Season – Spring 2021