My neighbour has just had his hedge cut back quite dramatically and has exposed a blackbird nest which I can see from my first floor flat window. There appears to be 2 babies in it and the mum/dad are still visiting and feeding them and I assume it the mum who is sitting on the nest too. The nest is now inches away from the top and edge of the hedge and totally exposed. I have some of the branches that have been cut from the hedge which fell into my garden. Should I intervene and lay the cut branches over the nest or leave alone and hope the parents don't abandon it or the weather or predators don't get them better of the babies.