Why is the whippoorwill referred to as a "voice of obsession"?

The reference to the whippoorwill as a "voice of obsession" can be understood through its distinct characteristic of repetition. This bird is known for its repeated call, which creates a haunting and almost hypnotic effect. The continuous and rhythmic nature of its song can evoke feelings of longing or fixation, as listeners may become captivated by the relentless echo of its call. This repetitiveness can lead to an obsession-like state, drawing attention back to the sound and capturing the listener's thoughts.

While the beauty of the whippoorwill's song or the time of day it sings may contribute to its allure, it is the specific quality of repetition that aligns most closely with the concept of obsession. The idea that the whippoorwill's song mimics other birds does not necessarily connect to the notion of obsession, as that aspect focuses more on imitation rather than the enthralling quality of its repeated calls.