Monarchs7

By Bruce Byers | Published October 31, 2017 | Full size is 584 × 553 pixels

Average daily rate of migrating monarchs at Cape May, 1992-2016. Source: CMBO Monarch Monitoring Project

Average daily rate of migrating monarchs at Cape May, 1992-2016. Source: CMBO Monarch Monitoring Project

Average daily rate of migrating monarchs at Cape May, 1992-2016. Source: CMBO Monarch Monitoring Project

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