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Bird-a-thon is Denver Audubon’s annual fun-raiser and birding extravaganza! Whether you're chasing rare warblers, keeping a casual list from your backyard, or simply looking for a great excuse to go birding with friends, Bird-a-thon is for everyone.
Each May, bird lovers across Colorado come together for a month-long celebration of birds, nature, and community. While fundraising helps power Denver Audubon’s education and conservation programs, the true heart of Bird-a-thon is participation, discovery, and joy in the natural world.
The only real requirement? Get outside, notice the birds around you, and have fun.

Many ways to bird and many ways to win!
Join us just for fun or compete for prizes and glory. Bonus --- every dollar you raise goes directly towards our mission of inspiring actions that protect birds, other wildlife, and their habitats through conservation, edcuation, and research.
To submit photos or stories for eligibility, please tag denver.audubon on Instagram or e-mail us at Birdathon@denveraudubon.org.
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Bird-a-thon is a community fundraising event benefiting Denver Audubon, a 501(c)(3) nonprofit organization dedicated to protecting birds, wildlife, and their habitats through education, conservation, and research.
Participation in Bird-a-thon is open to all. Donations made through this site are tax-deductible to the extent allowed by law and support Denver Audubon’s mission-driven programs.
Prize eligibility and fundraising recognition are based on donations received by the published event deadlines. Denver Audubon reserves the right to adjust prize categories or event details as needed.
For questions about participation, donations, or sponsorships, please contact us at info@denveraudubon.org
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