A breakthrough! Birbs can be superbirbs by using special Birblin "magic".
A birb is injected with edited radioactivity from a lab to hopefully produce a good mutation, while another birb is also injected with the same edited radioactivity. One dies straight on the work bed, while the other gains a "superbirb" mutation. After evaluating the cost and danger of this way it is stopped use but the "superbirb" will be ensigned into the military immediately.