White Eye - Failed Nesting

A few days ago, at about noon time,as I was walking past a Litchi tree in my backyard, I heard some feeble birdy calls which were probably being made by the young ones of some bird.I was elated and started searching the tree for a nest.Suddenly my eyes stuck on a well rounded nest,prettily covered with cobwebs with two chicks in it.The nest seemed to belong to the White-Eye and it was a matter of a few seconds before the bird made its appearance,carrying a moth in its mouth and eagerly waiting to feed its hungry chicks.Realizing that it was time for me to leave, I left the area and decided to visit the nest next day.

But as fate had in store for our feathered friends,the next afternoon when I went to check the nest,it was all but gone. Not even a trace of it was to be found either on the tree or on the ground below.The feeling of euphoria that was present yesterday had vanished. What do you think could have happened to the nest ? Comments awaited...