When it was dark enough he gave his fierce hunting call-"WHOOo-hoo- hoo, WHOO-hoo!"
"Mrs. Peter Rabbit"
Thornton W. Burgess
On every side dark shapes covered the face of the stream like water-bugs, from every side there came the "WHOO-sh-st-WHOO-sh" of dipping paddles, the little plank and rattle of their shafts against gunwales.
"The Maid of the Whispering Hills"
Vingie E. Roe
The birds are singing in the dell, Wee wee WHOO, wee wee WHOO; The birds are singing wild and free, In every bough of the forest tree, Come to the dell, come to the dell, Oh come, come.
"The Bride of Fort Edward"
Delia Bacon