Visibility

One of the benefits of the two piece design of Bird2 is the ability to vary the material in the stem section and the flight section. This means we can use a slightly more rigid material in the lower stem section as it is less vulnerable to breakage. It also allows the use of different colours. At present the only option for the stem section is dark grey. Although most people thought this looked interesting, there was some reaction to the unconventional appearance. However, in use people quickly warmed to the two tone design as it significantly improved visibility. Ceilings are normally white or light colours so the dark stems give more contrast.
The flight section has a denser infill pattern which has a number of benefits but notably gives a more opaque appearance and reflects more light, again improving visibility.