Back to this week's update.

First of the Season
On Thursday, October 20th, Eligio García Serrano reported the first monarch of the season to reach Mexico's overwintering region. He saw the butterfly outside the offices of the Monarch Reserve. Eligio is pictured here inside the monarch sanctuary one winter where he worked from many years. Thanks to Rocio Trevino for forwarding this report.

Monitoring the monarch butterflies' arrival in Angangueo, Michoacan