Monarch Butterfly

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Bill Calvert, Ph.D., has studied the biology and conservation of monarch butterflies for over 45 years. Here he tells about his 1977 encounter with the beautiful butterflies as they overwintered in the oyamel fir forests, high in the tropical mountains of Michoacan.

Date RecordedJune 30, 2023
InterviewerDavid Todd
IntervieweeBill Calvert
LocationBar Harbor, Maine
Time Code00:11:59