One of my sweet cherry trees is being attacked, first the leaves on the top branches had chunks bitten out of them and now the cherries (little and green, nowhere near ripe) are being taken too. It is about 10 years old and fruits every year and this has never happened before. There are 5 other cherry trees in the orchard which have not been touched (yet !). I'm thinking birds as it is starting at the top and there are no signs of insects, caterpillars or anything else. It's rather large to net but I think I will have to try. Any other ideas please ??