Some mallard ducks may choose to fly off on their own, so you may consider wing clipping if you notice them flying around too much and you don't want them too.
It's hard to say what exactly happened to your BIL's ducks after he released them. If none ever returned, then that's even more reason not to let them loose at his pond. Especially if his ducks disappeared and nothing happened to the wild ones that visit and return.
It's hard to say what exactly happened to your BIL's ducks after he released them. If none ever returned, then that's even more reason not to let them loose at his pond. Especially if his ducks disappeared and nothing happened to the wild ones that visit and return.
