Crested Barbet – The will to survival at all costs

At Berg en Dal Camp in KNP, this Barbet often came to eat around the car when I was working and I was amazed at its will to survive.

Somewhere along the line the bottom beak got separated from the other portion or it was born with two lower beaks. I cannot make out which it is.

 Anyway, with this deformity, it was now fully grown so had somehow found a way to feed itself in spite of it. How strong is the instinct to survive?

 The bottom portion was just dangling there and did not seem to hinder him at all.