To Kill or Not To....

We have this little garden at the back, which is frequented by many birds especially during the summer months. We leave plenty of water for them to drink and bathe, you can sense their happiness. It’s fun to watch them bathing, drying themselves and singing merrily. They let us come so close, perhaps they know that we will not harm them. Quite a few of them make it there home, nest and lay eggs. It gives me so much joy to see they building the nest, lay eggs, the excitement when the chicks hatch and when they grow a little big the parents teaching them to fly. However all those birds have begun to attract quite a few predators, attacking the birds, taking away the chicks, the eggs etc. and that leaves me so upset, like that ‘bulbul’ in the picture, a day after her chicks hatched the nest was attacked by a cat.
Both the little ones of the dove (the one in pic) were taken away by a hawk, the next time they laid eggs a mongoose cleaned the nest. It really upsets me, I want to kill these predators. You see those birds putting in so much effort and then it ends like this in a disaster. The dilemma is that a part of me stops me from killing those predators, I feel that by doing so I will be interfering with nature, after all they kill to survive, to feed their young ones. But what about my birds, the birds who trust me, who take refuge in my home. I actually keep an eye on the nests when ever possible but how long and more often than not those idiots win the battle…what do I do????