Last month from my balcony, I had observed this brown headed barbet making its nest or home by creating a hollow within the tree. Birds mainly build nests for hatching of eggs and rasing the young but sometimes after making a nest, they simply abondon it. I find this surprising because I had observed the amount of hard work that is involved when creating a nest inside the tree. They are constantly at work everyday. Nests could be abandoned for two reasons. One is that the presence of a predator such a cat or it could have been a dummy nest.