Flight call

Flight calls are vocalisations made by birds while flying, which often serve to keep flocks together.[1]

References

  1. ^ Cech, Rick; Dunning, John B. Jr.; and Elphick, Chris (2001). "Behavior". In Elphick, Chris; Dunning, John B. Jr.; Sibley, David Allen. The Sibley Guide to Bird Life and Behavior. New York: Alfred A. Knopf. pp. 68–69. ISBN 978-1-4000-4386-6.