I have three mallards. Two came to me as babies, and neither one of them have ever flown off. My girl has flown into my backyard once. I also got another pair of mallards last December. I told the people who found them they could put them in my backyard but that they wouldn't stay. Well, they have. They would fly into my neighbors back yard, my backyard, my side yard, my front yard, but they always came back. I was really surprised, because they came to me during a HUGE snowstorm, and since they were older birds and weren't mine and had never been here, I thought for sure they would be gone in a few days. But, they never left. Sad thing is, they were in my backyard and my dogs got the female and played with her to death.