The ponds near our house have Canada Geese that overwinter - and in the spring it is time for babies.
The goslings have hatched and swim along with the parents
And several Mallard families nest in the same area
Something upset Mother Goose - off to the water with the babies close behind
This is what upset them. A coyote? Whatever it is - it is not in good health. I did a lot of research and the options are a cross between a fox and coyote, a very young coyote, a cross between a dog and a coyote, or a young coyote with the worst case of mange ever. Poor critter.
Go away - whoever you are!!