Describe how Louis thwarted the keeper's plan to pinion Serena.

In Chapter Eighteen, the Man in Charge of the birds finds out about Serena and send his workers to clip her wings. Louis, realizing what is going to happen, sneaks up on the man with the net and pokes his beak right into the man's bottom. Louis the begins flapping his strong wings and running at the other man, scaring them away.