Bird-a-thon 2012

Bird-a-thon, Mass Audubon's annual fundraiser where teams of birders spend 24 hours trying to spot the most species in Massachusetts, took place May 11-12, 2012.

Some folks tweeted that they heard about Bird-a-thon while enjoying the Sox game. Bird-a-thon is everywhere!

5 / 49

Some folks tweeted that they heard about Bird-a-thon while enjoying the Sox game. Bird-a-thon is everywhere!