Oh, I didn't do any one on one time. They got so distressed and peeped like crazy when separated that I felt awful and put them back immediately. I had them in our spare bedroom, and actually sat in their brooder with them all day for weeks. They slept on my feet and were so sweet!! But, strangely one of the ducks I adopted as an adult is just as friendly as the baby who slept on my feet for 3 weeks after hatching.I found that they ended up a lot more friendly if you spend a lot of 1 on 1 time with them during the first few weeks of life. I would have their little brooder setup in the garage and take one duckling at a time into my bed for about an hour per duck per day and they all ended up quite friendly and only 1/5 ended up not enjoying the pets once he got older.