I have a friend with a small pond, fed by a small stream. He tried to keep ducks and geese, but like you they all slowly disappeared without a trace. He tried with 3 different flocks, all with the same result.
It turns out his pond is also a haven for a family of mink that use it along with a section of river not far away.
It also may be Fox, coyote or bobcat that may also be picking off your flock when opportunity presents itself.
Sorry for your loss!
It turns out his pond is also a haven for a family of mink that use it along with a section of river not far away.
It also may be Fox, coyote or bobcat that may also be picking off your flock when opportunity presents itself.
Sorry for your loss!