For the past two weeks we have had 2 white swans in a wheat field that have not moved but a few feet at a time. The past two weeks we have been down to 7 degrees at night and I've never seen them here before. We live in North Georgia and this field is surrounded by chicken houses and with that a lot of coyotes. I was concerned. Is this normal behavior for them? Do we leave them alone or call anyone? Thank you for your advice