Intervals in example sentence
A catbird, the Northern mocker, lit in a tree over Tom's head, and trilled out her imitations of her neighbors in a rapture of enjoyment; then a shrill jay swept down, a flash of blue flame, and stopped on a twig almost within the boy's reach, cocked his head to one side and eyed the strangers with a consuming curiosity; a gray squirrel and a big fellow of the "fox" kind came skurrying along, sitting up at intervals to inspect and chatter at the boys, for the wild things had probably never seen a human being before and scarcely knew whether to be afraid or not.