From 2speccers2tools wiki

Prosirb is bigger and faster than his ancestor and eats mostly bugs and mushrooms. A cytoskeleton-derived endoskeleton holds him up. A good sir and gentleman like him, sexy eyelid snood and all, can catch himself on his wings if he slips, now much longer and bearing wrist claws used in self defense. As a unicellular organism nothing stopped another pair of wings from appearing as well but they are small and useless. When he buds he finds another prosirb and their buds merge and later perform meiosis to produce 4 genetically distinct offspring. He bill soft and can grasp food. Now he has a mane down his back instead of just colar.