I don't want to be another mean person, but those birds are not native to the Americas - they are a threat to the local wildlife :/
I would have probably tried the same though.
I am raising baby birds right now: quail. They eat solid foods from day 1 so that's much easier. I might have to cull 2 of them soon though, since they have major problems.
I feel your pain.
RE: How I Tried Saving 3 Baby Birds, But Only 1 Survived (Mean People Suck)