I have cared for a baby bird, before.
This bird still has their eyes closed, which makes it both higher risk (lower chance of survival), and harder to care for (it isn't easy to get them to open up for food, when they don't see you).
I am using a tweezer to pick rice size bits of soft cart food. I keep feeding it until he stops eating, and then I set my timer for another 20 minutes. The bird is eating, which is good, and has even pooped once already.
The baby bird is a baby sparrow.