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May 7, 2021 | 7:00 pm - 8:30 pm
Over 30 warbler species pass through Massachusetts during spring migration. Learn how to identify them by their “bright, cheerful plumage” in an online course via Mass Audubon on Fridays beginning May 7th, from 7 to 8:30 p.m. Registration is $60 at massaudubon.org.