Here's the fascinating story about the actor who has played Big Bird on 'Sesame Street' for 40 years

There's a new documentary about Carroll Spinney, the puppeteer who played Big Bird ever since the character debuted on "Sesame Street" in 1969. The film, entitled "I Am Big Bird: The Carroll Spinney Story," chronicles the origin and evolution of the character through vintage footage and interviews. 

It is now playing in select cities and is also available on demand.

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