CHAPTER XXXI. Voices of the Dusk. 

Jolly, round, red Mr. Sun was just going to bed behind the Purple Hills and the Black Shadows had begun to creep all through the Green Forest and out across the Green Meadows. It was the hour of the day Peter Rabbit loves best. He sat on the edge of the Green Forest watching for the first little star to twinkle high up in the sky. Peter felt at peace with all the Great World, for it was the hour of peace, the hour of rest for those who had been busy all through the shining day. 

Most of Peter's feathered friends had settled themselves for the coming night, the worries and cares of the day over and forgotten. All the Great World seemed hushed. In the distance Sweetvoice the Vesper Sparrow was pouring out his evening song, for it was the hour when he dearly loves to sing. Far back in the Green Forest Whip-poor-will was calling as if his very life depended on the number of times he could say, "Whip poor Will," without taking a breath. From overhead came now and then the sharp, rather harsh cry of Boomer the Nighthawk, as he hunted his supper in the air. 

For a time it seemed as if these were the only feathered friends still awake, and Peter couldn't help thinking that those who went so early to bed missed the most beautiful hour of the whole day. Then, from a tree just back of him, there poured forth a song so clear, so sweet, so wonderfully suited to that peaceful hour, that Peter held his breath until it was finished. He knew that singer and loved him. It was Melody the Wood Thrush. 
Whose life seemed to depend on how many times he could say Whip poor Will?
Whip-poor-will 