1
The sudden whirr of a bird's flight attracted only a casual glance.
2
Then came a sudden whirr, and up into the air went a small flock of pheasants.
3
A sudden whirr cut through the silence.
4
Then came a sudden whirr of machinery.
5
A sudden whirr of eager sound-
6
There he was, fine fellow, with his silly, mincing run, redeemed all at once by the sudden whirr of towering flight.