Flyer Blue Bird?

Does anyone know the history behind the Blue Bird decal on early CCM Flyers? Did a bike with this decal differ in any way from other Flyers, or was it just there because of the frame was blue? What years was the decal used? I know of blue Flyers from the 1920s and '30s with this decal and a blue 1951 Prof Racer Flyer that doesn't have it.

Wayne has not reproduced this decal. Does anyone have a NOS BB decal from CCM?