Chippered [verb]

Definition of Chippered:

vocalize as a bird

He looked more and more like a well-to-do old English sparrow, and chippered faster and faster.

"There was nothing that chippered you up so, as being real driving busy," Mrs. Jeffords said.

From an oak that shaded the porch a squirrel chippered at them.

There, still more bats bung and chippered in protest as the intruders passed.