Which documentary is narrated by John C. Reilly, Bears or Wings of Life?
Bears (film):  Directed by Alastair Fothergill and Keith Scholey and narrated by John C. Reilly, "Bears" was released theatrically by Disneynature on April 18, 2014, the seventh nature documentary released under that label. Wings of Life:  It was released theatrically in France on March 16, 2011, with narration by Melanie Laurent, and in home media markets across the US on April 16, 2013, with narration by Meryl Streep.
Bears