Red house finche family

Love my backyard red house finches, I have about five families, this dad however has been working double time taking care of this sweet baby that clearly has a most horrible deformity!!! I feel completely helpless because I know he can never survive with half a beak, when dad stops feeding him he will surly die of starvation. Has anyone ever seen this in baby house finches??? Would trying to capture him do any good??? Feeling heartbroken.

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