Hi, Alaree, and welcome to BirdForum from all of us on staff here.
Birds have to be taught how to forage and feed themselves. This is why we usually recommend that humans let Nature take its course this time of year unless the human can return the chicks to their nest. If the nest could not be found, and you saw no adult birds around, you really should have called a rehabber right away. I'd urge you to do that now as they will know how to care for the chicks and can determine whether they are in fact releasable when grown.
I know it's hard to resist trying to "help" baby birds, especially this time of year when so many chicks look like they're out of place on the ground. But this may be part of their training from the parent birds. Please keep us posted on what you decide to do and how the chicks fare, will you? :t: