Possible Clues:

• Species of nightjar
• American bird with mottled gray and brown plumage
• Gray-and-white American goatsucker
• Bird named for its song
• One might fly with trendy impoverished playwright
• American nightjar — or how will Pip? (anag)
• North American goatsucker
• American bird with joint who'll be found begging?
• Nocturnal bird
• North American nightjar