We have 6 7 wk duckling that free range and sleep with the chickens. We also have 9 little 1 or 2 wk old ducklings in the brooder in the garage. Yesterday was so nice out that I had the babies out in the grass and the 4 half grown mallards came over and started herding them Then my half grown pekin, who was initally stand-offish attacked and I shooded it away. Should I continue to have supervied visits as other threads have sujested or keep them apart until the second group is feathered and the size difference is diminished? Will I have two seperate groups of age cohorts fighting for the best areas or should they eventually integrate? Thanks!