On a light drizzling evening in October 2017, I noticed numerous Red-whiskered Bulbuls (Pycnonotus jocosus) gathering in a Hong Kong Orchid Tree (Bauhinia purpurea x var. ‘Blakeana’) before flying to their roosting trees nearby LINK (above, below).
Some came to rest on the branches but others were pecking on the edges of the leaves and eating the pieces (above).
Many birds do eat leaves – Asian Glossy Starling (Aplonis panayensis), parakeets, among others. These birds do not feed regularly on leaves. Only hoatzin (Opisthocomus hoazin) and Owl Parrot (Strigops habroptilus) obtain most of their energy from leaves – see HERE.
8th October 2017