Along the same lines, I recently got 6 more ducklings. I was free ranging, but lost most of my flock. I was down to 2 ducks from my original flock of 8. After i built a more secure run for them, i decided it was time to get some friends!
My problem now is that the babies (4 months old at this point) seem to be terrified of everything! I dont know what i did wrong

up to now, after movig them outside, I've kept the run divided with a short fence. The babies seem to only want to stay in their house and only come out for meals. My two year old Pekins seem to be normal, well adjusted ducks who are constantly foraging when I let them out.
What do I do? I kinda want to force the issue and kick them out into the world. They're big enough to hold their own against the drake at this point. But, will that do them emmotional harm? :/