Is t possible that ducks can gang up on others. We have 2 ducks that were introduced to the other 4 and we had to keep them separated due to the 4 larger ones pecking them and chasing them. Once the 2 got bigger we keep them all in barn at night together kept safe from predators. Thru the day they usually stay around each other but lately the 2 are being excluded and always look roughed up. This evening when I went to lock them in, I found the 2 around the side of the barn instead of inside with the others......unusual. And one of them has eggs inside..... could the others possibly keep them from getting in? Makes me sad for the 2