Its name is mokujin

It looks like a baby Starling, to me.
Kindly do your best to ascertain its true identity (like look for local parent birds in a roof, or nearby).
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Starlings are a pest on a national scale, competing with native birds and animals for nesting hollows, etc.
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I would not recommend doing anything to help it survive.
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Nicety prevents me from publishing my recommended response.
I hope you can you read between the lines.
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Denis