02/10/2012 08:26 am ET Updated Apr 11, 2012

Mark Salling Sings For The Birds (VIDEO)

Months before skyrocketing to fame on the cast of "Glee," Mark Salling was a tree-hugging bird-loving acoustic-guitar-playing hippie-dippie park squatter -- and we got the footage to prove it!

You see, Mark -- an outspoken bird advocate -- is a member of the Echo Park Ornithology Club in Los Angeles.

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