Monarchs On The Move

March 12, 2024 by Nancy Sheehan, Program Coordinator

Monarch spring migration has begun. Reports along the California coast are decreasing as monarchs begin their annual spring migration. Only a few monarchs remain in the Monarch Butterfly Biosphere Reserve in Mexico.

“Have seen monarchs several times in the last week. This was first opportunity I’ve had to try to get a photo.” Photo: Lynda in Litchfield Park, AZ (03/12/2024)

From the Monarch Butterfly Biosphere Reserve

Estela Romero bids farewell to monarchs as they fly north to breed in the U.S. and Canada.  

Letter from Estela Romero: Season’s Farwell 

Carta de Estela Romero: Despedida de la Temporada

Travel to the Monarch Biosphere Reserve without leaving home. Final videos of the overwintering season have been posted to the Journey North YouTube Channel.

Playlist: 2023-2024 Overwintering Season at the Monarch Butterfly Biosphere Reserve, Mexico

Western Monarch Population

Gail Morris provides a snapshot of Western monarch population behavior. Recent sightings of adult monarchs were mainly concentrated in Southern California for the last two weeks, as well as in Las Vegas, Nevada, and the greater Phoenix area in Arizona. Meanwhile, reports along the California coast are dwindling as Monarchs leave the region on their annual Spring Migration. Ms. Morris also highlights recent observational reports. Additionally, Stephanie Turcotte shares her final reflection on the overwintering season, noting the continued charm of Monarchs even after the official count ends.

2024 Spring Letter #3: Western Monarch Population News From Gail Morris

Please Submit Your Observational Reports

If you are observing monarchs and milkweed, please report to Journey North. 

Thank you!