Admit it. You have committed the evolutionary sin of feeding ducks. Not content to let them forage for their own food you toss them processed bread. Your indiscretion goes even deeper because, annoyed by the bigger, stronger louder ones, you direct your food distribution campaign to the smaller, weaker ducks. Didn’t you get the natural selection memo? You have just violated evolution 101 and showed compassion for a Darwinian invalid. How dare you? You may set the evolution of ducks…..