Overwintering Monarchs

December 3, 2020 by Team Journey North

Monarch colonies are well defined now at El Rosario and Sierra Chincua Sanctuaries. Visitors are arriving.

El Rosario Sanctuary. Photo by: Estela Romero

Letter From Estela Romero: The Long Wait (for visitors) is Over!

Estela Romero reports on monarch activity at the El Rosario and Sierra Chincua Sanctuaries. She writes, β€œAt the El Rosario and Sierra Chincua Sanctuaries, monarch colonies are now well defined and dense. Big clusters can be clearly identified at various locations viewable by visitors. Our temperature conditions continue to be very concerning, ranging from 23-25 Centigrade in the shade. We fear that ideal levels of humidity will disappear.”

Read more of Estela Romero’s Seventh Letter of the Season:The Long Wait is Over! 

Winter Reporting 

Monarch activities continue during December, January and February. Please continue to report your observations:

Adult Monarchs

  • Report to Journey North all monarchs you observe during December 2020 and January and February 2021. Monarchs can be present during these months in many southern and southwestern U.S. states. Journey North will be sharing information about a special collaborative effort to track monarch activity in the Gulf states of Texas, Louisiana, Mississippi, Alabama, and Florida as well as Georgia, South Carolina and North Carolina. Stay tuned to learn more if you live in these states.

Monarch Eggs, Monarch Larvae

  • Report to Journey North all monarch eggs and larvae you observe so we can learn more about monarch breeding activity during these winter months.