Given what we know, we can confirm that the Piagetian concept being described in this question is that of accommodation.
This is one of the many concepts put forward by psychologist Jean Piaget. This concept described the changing of ideas or thought structures to include new information that was recently obtained. In this example, the child incorporates the new information by changing the name used for all winged creatures.
Therefore, we can confirm that the Piagetian concept being described in this question is that of accommodation.
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