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Journey North, a program of the UW-Madison Arboretum, provides our migration maps as a general reference. While volunteers strive for accuracy, please note that Journey North staff cannot guarantee the complete accuracy of the data. As of October 2023, changes in verification procedures prioritize first sightings for the Monarch & Milkweed and the Hummingbird Projects. Users should be aware that reports may contain inaccuracies and are subject to periodic maintenance and updates. The responsibility for assessing accuracy and suitability for use lies with the user. Thank you.