It is a flood of soft Warbling notes, tinkling like a brook deep under the ice, tumbling over each other in a quiet ecstasy of harmony; mellow as the song of the hermit-thrush, but much softer, as if he feared lest any should hear but her to whom he sang.
"Ways of Wood Folk"
William J. Long
His only consolation was to repair nightly to his post of observation, and listen to her Warbling; and if by chance he could catch a sight of her shadow, passing and repassing before the window, he thought himself most fortunate.
"Bracebridge Hall, or The Humorists"
Washington Irving
There was a little piano in the sitting-room they gave us, and Mrs. James began drumming out a few Scotch airs, Warbling the words in a high, thin voice rather like that of an intelligent insect.
"The Heather-Moon"
C. N. Williamson and A. M. Williamson