flutter

The motion made by flapping up and down.

A disorderly outburst or tumult.

The act of moving back and forth.

Abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block.

Wink briefly.

Move back and forth very rapidly.

Beat rapidly.

Move along rapidly and lightly; skim or dart.

Flap the wings rapidly or fly with flapping movements.

“The seagulls fluttered overhead”