I've been reading on here that you need to take broken or cracked eggs away from hens right away, or they become chronic egg eaters. How serious a concern is this? It has me a bit confused, because once a week my grandmother would toss all the eggs from that day to the ground, and let the chickens go at them, so I've grown up doing the same and have never noticed a problem. I thought hens wouldn't touch an egg unless it had been cracked open. Should I be concerned that perfectly good eggs are being eaten without my knowledge?