How does Thoreau personify or give human attributes to the loon?

In his writing, Thoreau personifies the loon by attributing it with a sense of melancholy and wisdom, suggesting that its haunting calls reflect a deep emotional state akin to human feelings. He describes the bird's presence as an embodiment of solitude and introspection, emphasizing its connection to the natural world and its role as a symbol of the wild. Through his vivid descriptions, Thoreau elevates the loon from a mere animal to a creature that resonates with human experiences of longing and contemplation.