With Special Thanks to Our Co-Hosts
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Subscribe to the Biggest Week eNews for all the latest updates!
General Registration Now Open!
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It’s time to register for the 2025 Biggest Week In American Birding! We hope you are as excited about the incredible lineup of field trips, workshops, keynotes, and events as we are! Visit our website or click the link in the comments to begin registering.
We look forward to sharing an aMAYzing festival with you! 
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2025 Summary Schedule Now Available!
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Our Summary Schedule is now available! This allows for an easy day-by-day outline of all of the exciting activities happening at the Biggest Week! As we get ready for registration to open, use this document to make your list of most-wanted events!
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Introducing the 2025 Keynote Speakers!
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To learn more about all of these exciting keynote presentations, visit the 2025 keynote page on the Biggest Week website by clicking the button below!
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Field Trip Site Guides!
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Read the Biggest Week in American Birding Field Trip Site Guides! This library of resources helps share information about one of the most popular aspects of the festival. In these site guides, you will find information about the locations the trips visit, accessibility information, meeting locations, target species, and how to get your eBird checklists following the trip.
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Thank you to our 2025 partners!
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Thank you to our 2025 sponsors!
Kirtland's Warbler Level - $25,000+
Blackburnian Warbler Level - $15,000+
Vertical Divider
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Magnolia Warbler Level - $10,000+
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Hooded Warbler Level $5,000+
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Cape May Warbler Level $2,500+
Vertical Divider
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Yellow Warbler Level $1,000+
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