How did Louis grow and change

Louis is the protagonist and a trumpeter swan was born mute, unable to make a single sound. Initially, he was frightened at how this made him different from all the other swans and distressed at how much he felt he was missing out on. Fortunately, his parents are supportive which helps alleviate that worry and he decided to instead focus on how he will communicate. He is very intelligent and a clever bird, being adept at learning to read and write and demonstrating math skills. He communicates with humans by using chalk and a board which hangs around his neck. He falls in love with a swan named Serena and becomes resolved to grab her attention. After convincing Sam to modify his toes using a razor (which will allow him to properly pay), he becomes renown for his excellent, almost ethereal trumpet playing. He is also able to use the trumpet to communicate with other swans. Louis has a good heart and helps those in need when he can.