Also.. I might add,
I don't know where you live but where I am you are actually supposed to have a license to keep mallards. It is actually against the law to take eggs from wild mallard nests or to interfere with them in any way. If you own "domestic" mallards
They're supposed to be banded and there are guidelines you are supposed to follow in regards to when they can be freely roaming around.
It may or may not be a big deal where you live but it's something you might want to check into.
I don't know where you live but where I am you are actually supposed to have a license to keep mallards. It is actually against the law to take eggs from wild mallard nests or to interfere with them in any way. If you own "domestic" mallards
They're supposed to be banded and there are guidelines you are supposed to follow in regards to when they can be freely roaming around.
It may or may not be a big deal where you live but it's something you might want to check into.