What breed is the gosling? Since you found them, do you think it's a domestic breed, or a Canada goose? The reason I ask is, you can't keep a Canada goose. It's against the law. The Migratory Bird Act makes it illegal to own a Canada goose taken from the wild.
And the trouble is, you can't release it either, because they need to learn the migration routes from their parents, so if you just let it go when it's older, you're condemning it to death when it cannot migrate.
And if you keep it and are caught, you will face major fines and even possibly jail time. So if this is a Canada goose, you need to hand it off to a wildlife rehabber, not keep it yourself.
So, until you hand it off, or if it's a domestic breed, you will want to keep it in a brooder with bedding such as pine shavings and a heat lamp that it can go under when it gets cold. You should be feeding a waterfowl starter, a flock raiser, or chick feed with added niacin. They are grass eaters, so if you can take it out to east grass or bring grass in for it to eat, that would be very beneficial for it.
