I think it goes:
There's a whippoorwill singing in the pale moonlight,
"Whippoorwill, whippoorwill"
He's singing a song that makes me long for home tonight,
"Whippoorwill, whippoorwill"

He's singing 'bout the honeysuckle 'round our cabin door,
He keeps saying someone's praying
He'll come back for more.
There's a whippoorwill singing in the pale moonlight,
"Whippoorwill, whippoorwill"

...my dad, too sang this to us often. Thanks for reminiscing...