Honestly, whenever I have time I put a towel down and sit in their pen or lay on the towel to get to their level. I also had brought them in the house and let them cruise around in a playpen while I did every day house chores so they could watch me from afar and know I’m not a threat. I started early on giving them mashed up peas and crushed up mealworms. Once they got a taste for those, every time I walked up they assumed I would give them some sort of treat. I pulled fresh kale from my garden and would let them tug pieces from my hands. They do run if I try to hold them, but once they are in my arms they nuzzle up to me and are completely calm. My blue Swedes scream when I initially pick them up, but I just talk to them and they stop instantly and become calm. For my adult drakes, I did the same thing with them and they follow me EVERYWHERE! If I go inside the house, they literally wait outside the door for me. You just gotta devote time to spend with them and entice them with treats. Now that my 5 week old ducklings are outside, I’ll sit in their pen with them still and both the babies and the adult drakes can check each other out. I think when the babies watch the boys follow me and see that they trust me, it helps them gain trust with me too. My drake pekin let’s me hug him, kiss him, and hold him. My mallard cross drake isn’t fond of getting loved on, but he never leaves my side. Sorry for the lengthy response!