

Contact a local rescue / conservancy group and ask them. The right course of action is species-specific.
There are multiple possibilities and all of these could be wrong:
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Parent bird is kicking out babies because it’s time to fly. Baby should not be put back in the nest.
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Siblings are kicking out the weakest bird. Some birds do this. Definitely don’t put back in the nest, they’ll keep getting kicked out.
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Nest is compromised, too weak, at an angle, etc. Might be able to repair and put back in the nest. This is very unlikely to be the correct course of action because it has lots of feathers and is probably not supposed to go back in the nest.
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Baby has some kind of genetic or developmental variation that has led to the parent or siblings kicking it out. Don’t put it back in the nest.
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It’s learning how to fly and needs open air and soft ground to avoid injury. Should go to a conservancy group or just get placed in shade in the heat of the day to maximize flying and minimize predation. Crepuscular and nocturnal animals are usually the main predators.
Hell yeah