Tracking bird movements

It's always a challenge to try and make out that movement in the leaves, knowing that a bird is there, and could be gone in a split second.

One could only guess what it could be going by the location of the movement.  Still, the feeling was that it could be something else?!

It turned out to be just the female Plain-throated Sunbird.  Nevertheless the reward was discovering how gorgeous and varied the flowers were way up high there, only distinct with zoom lens.