I've it a hen hatching ducklings. She had 6. Two in shell yet. One hatched last night - and now I'm missing two, two day old ducklings with no signs of them. She's in a raised nesting box, and I was waiting to move her until the last eggs hatched since they were beaks out. The coop has other ducks in it, but they're really docile. My kids didn't lock up the flock last night. So it's possible that something came in. But I see NO sign of anything else being disturbed. Any ideas?