Question : I suddenly notice a crow about to feast upon the pigeon eggs hatching at my windowsill. Will I not accrue papa if I do not chase the crow away?
Answer: If you chase the crow away, it is because the prakruti/nature/god has conditioned your mind through years of sensory inputs to act that way so that the egg hatches into life.
If you allow the crow to have its meal, again it is because the prakruti/nature/god has conditioned your mind through years of sensory inputs to act that way so that the crow doesn't starve to death.
In both cases A LIFE is saved.
It is all your perception. You are looking at the life inside the egg as the poor helpless and the life inside the crow as the cruel one. Once the egg is hatched, what will it do? It will start feeding on so many other lives like insects, ants, worms etc. That is the way of nature.