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    HomeMonarch butterfly numbers in Mexico plummet to near record lowFILE PHOTO: Monarch butterflies at Mexico’s Sierra Chincua butterfly sanctuary

    FILE PHOTO: Monarch butterflies at Mexico’s Sierra Chincua butterfly sanctuary

    FILE PHOTO: Monarch butterflies fly at the Sierra Chincua butterfly sanctuary in Angangeo, Michoacan state, Mexico. December 3, 2022 REUTERS/Raquel Cunha TPX IMAGES OF THE DAY/File Photo
    FILE PHOTO: Monarch butterflies at Mexico’s Sierra Chincua butterfly sanctuary
    FILE PHOTO: Monarch butterflies descend on Mexican Sierra Chincua butterfly

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