Reason for posting was it’s behaviour. This was an adult judging from its active primary moult. Bird was giving its loud chattering annoyed call that it gives when startling prey from cover or scolding when threatened. On closer inspection bird had a small cicada with black spots on wing (Galanga labeculata Double spotted cicada). It was trying to remove wings or at least reduce it to edible chunks. Surprisingly it was clasping cicada in left foot on hard ground and pecking at it. This looked very much like intelligent /adaptive behaviour. It then tried atop a 44 gallon steel drum to continue. Definitely a good hard anvil. All this time it continued its chatter.