I have 3 Mallards, 2 Khakis, and a Buff who are grown, and they have hated me since day one. On the other hand, I also have 3 ducklings that I got almost a month ago: 2 Cayugas and a Blue Runner, and they are super loving and cuddly. There are a couple philosophies that I have picked up from keeping ducks-the fewer you have, the better, since it seems in my experience that they follow one another's behavior, no matter how awful. My six bonded to each other rather than me, and if I stuck my hand in the brooder, when one screamed, all the rest went absolutely beserk and screamed, too. The new ducklings are so much nicer, and they have imprinted on me magnificently, which I am SO grateful for. The other philosophy is that since my older ducks can't stand to be touched or petted, I will respect their wishes and not do so; lately, this treatment has been working to some degree. They actually will approach me now, and are less afraid of being within a foot of me (whereas before, they refused to come closer to me than 8 feet away). Treats are another good way to earn ducks' trust, especially peas and corn, which they naturally attack ravenously.

Believe it or not, the unfriendly ducks are finally eating out of my hand. At last!
-Alexandra33