From May 13 to May 14, birders on over 25 teams will spend 24 hours trying to spot the most bird species in Massachusetts.

Bird-a-thon, Mass Audubon’s annual fundraiser, is a reminder of the variety and abundance of wildlife and habitat in Massachusetts and the role we play in protecting it. Competitive birders and friends of Bird-a-thon, Bird-a-thon Boosters, raise money from friends and family to support the entirety of Mass Audubon or their favorite sanctuary or program.

All donations from the Island support Felix Neck Wildlife Sanctuary.