Monarch Watch Blog

Monarch Population Status

Thursday, February 25th, 2021 at 3:30 pm by Jim Lovett
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World Wildlife Fund Mexico in collaboration with CONANP and the Monarch Butterfly Biosphere Reserve (MBBR) announced the total forest area occupied by overwintering monarch colonies today. Nine (9) colonies were located this winter season with a total area of 2.10 hectares, a 26% decrease from the previous season (2.83 ha):

Figure 1. Total Area Occupied by Monarch Colonies at Overwintering Sites in Mexico.

WWF release (in spanish): Menor presencia de mariposa Monarca y aumento de la degradaciĆ³n en los bosques donde hiberna

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