Have you been paying attention to shares of Blue Bird (BLBD) ? Shares have been on the move with the stock up 52.5% over the past month. The stock hit a new 52-week high of $58.07 in the previous session. Blue Bird has gained 107.4% since the start of the year compared to the -14.9% move for the Zacks Auto-Tires-Trucks sector and the -23.2% return for the Zacks Automotive - Domestic industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, as it hasn't missed ou ...