Bird-a-thon • May 14–15, 2021

Mass Audubon's Biggest Annual Fundraiser & Nature Celebration

BAT 2021 illustrated banner with bird icons

Because Nature Needs Heroes—Now More Than Ever

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Bird-a-thon brings birders, nature-lovers, and families together—virtually and in-person—to celebrate nature and raise funds that provide essential year-round support for Mass Audubon's conservation, nature education, and advocacy work.

The 2021 Bird-a-thon event is particularly special because it's part of Mass Audubon's 125th anniversary celebration! Founded in 1896 by two Boston women who used their voices to stop the slaughter of birds for fashion, Mass Audubon has remained an independent organization at the forefront of conservation for the last 125 years.

No matter if you join for the fun of it or for the thrill of competition (or both!), every participant is encouraged to help their team fundraise in support Mass Audubon's mission to protect the nature of Massachusetts.

Eastern Bluebird male on a twig © Joel Eckerson
Eastern Bluebird (male) © Joel Eckerson

Here's How It Works

This year, 13 teams representing different Mass Audubon wildlife sanctuaries or programs are raising money while helping people of all ages connect with nature in communities across the state (and beyond!).

During Bird-a-thon weekend, these teams will compete head-to-head in two ways—by earning points from birding and nature activities, AND by birding in strategic sub-groups in an effort to identify the greatest number of bird species in 24 hours.

Join a Team

You don't have to be a birder to participate in Bird-a-thon!

Everyone is welcome to join a team—whether you're into birding, love exploring nature, or just want a good reason to get outside on a spring day. Check out the participant-submitted photos from last year's spectacular event in the Bird-at-home-a-thon 2020 Digital Gallery.

To participate and help raise money for your team, you can register to fundraise through our Bird-a-thon fundraising platform. Whether you raise a lot or a little, every dollar makes an impact!

To bird or participate without fundraising, you can register with your Team Captain by completing this online form .

→ If you just want to donate, see the "Donate" section below.

Want to learn more about joining a team? Contact the Bird-a-thon coordinator or talk to your local Mass Audubon wildlife sanctuary.


Show your support by making a donation!

You can make a donation online to support a participant, a team, or the overall event. Not only will you be cheering them on for Bird-a-thon, your donation will also help protect the nature of Massachusetts! 

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Event Sponsorship

The Bird-a-thon planning team is currently looking for sponsors for Bird-a-thon 2021!

Learn more about sponsorship opportunities >

Lead Sponsor

Media Sponsor


Supporting Sponsor


Community Sponsor

River Valley Co-op


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