I live on the Rancocas Creek in New Jersey. It is a large tidal creek. There is a pair of swans that have been living here for over a year now.
The temperatures are dropping to the 20's and colder at night. Some of us are feeding them as much as we can afford to. Corn, peas, bread etc.
I am concerned that these very low temperatures will harm them. It is snowing now.
Is there any way to convince them to leave for warmer locales?

The above photo is the male swan. We call him Crackers because of his affinity for, well, crackers.