Nest fell out of tree 7 hours ago

[simoneg]

Hi, about 7 hours ago my neighbour was cutting down some dense foliage and down fell a nest with 2 baby birds inside, they are grey crested pigeons. We put the nest back up in the remaining foliage. The baby birds are about 10cm/3 inches and are brown & fluffy.I am so worried as I have been watching from inside and have seen the mother and father return and hover around but are yet to actually sit back on the nest. It is dark now and I am concerned as what to do next. Will they survive the night? It is summer here so quite warm. If the parents dont come back what will I do?? Any help is much appreciated as I cant sleep/eat as I feel so worried for the babies. Simone