Bierd's best season in the Tigers organization came in 2007, when he pitched for the Single-A West Michigan Whitecaps and the Double-A Erie SeaWolves.

[1] On December 6, 2007, Bierd was selected by the Baltimore Orioles in the major league phase of the Rule 5 draft.

On April 2, 2008, Bierd made his major league debut against the Tampa Bay Rays, and pitched two scoreless innings.

[6] Bierd spent the 2009 baseball season with the Triple-A Pawtucket Red Sox, achieving a 3–1 record with a 4.55 ERA as both a starter and reliever.

[5] He spent the 2010–2011 offseason pitching winter baseball in the Dominican League for Leones del Escogido.