Not since Alfred Hitchcock's landmark film have birds made such a mark on the cinematic landscape. And the incredible box office success of natural history films March of the Penguins (us$72.5 million internationally) and Winged Migration ($32.2 million) - the second- and fourth-highest grossing feature docs released in the u.s. since 1982, beating out such titles as Hoop Dreams, Spellbound and Super Size Me - was just as unexpected an avian revolution as the one Tippi Hedren faced.

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