In case anyone asks me eventually,I'm going to cite it here now. As for answers, I don't know. (yet)
Prospect Lake's Mute Swans have disappeared. Sometime over the weekend, the resident 7 swans went poof, last seen last Friday.
As to where they went, I have not the slightest idea after getting a report today of their absence. I'm sure something will come about from the media end as these birds are beloved by the community.