Monarchs6

By Bruce Byers | Published October 31, 2017 | Full size is 650 × 449 pixels

Monarch population trends based on area occupied by overwintering colonies in Mexico. Source: Monarch Watch Blog, 11 February 2017.

Monarch population trends based on area occupied by overwintering colonies in Mexico. Source: Monarch Watch Blog, 11 February 2017.

Monarch population trends based on area occupied by overwintering colonies in Mexico. Source: Monarch Watch Blog, 11 February 2017.

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