There have been many excellent musicals and revivals in Washington’s 2012-2013 theater season, but the best new play is Aaron Posner’s “Stupid F—ing Bird” at the Woolly Mammoth Theatre.

Of course, Posner has to share some of the acclaim with Anton Chekhov, whose 1896 “The Seagull” was the inspiration for Posner’s script. Like Chekhov’s original, Posner’s play deals with characters who ponder life, love, art, nature, optimism, pessimism, romance and despair.