A couple hours. Think of them like dog cat hybrids, spend time with them like they’re your dog or they’ll become independent like a cat and your existence will mean little to them.
You just have to spend more time with them. Goslings will associate anyone who spends the most time with them as a parent, but they’re alone with each other far more often than they see you, so you’re a scary stranger to them. Geese as adults are pretty similar, they’ll associate you as one of...