// Workers AI · dad joke modeWhat did the flight call say to the phone? "You're cleared for hang up.
Flight calls are vocalisations made by birds in flight, often serving to keep flocks together.[1]
References
[edit]- ↑ Cech, Rick; Dunning, John B. Jr.; Elphick, Chris (2001). "Behavior". In Elphick, Chris; Dunning, John B. Jr.; Sibley, David Allen (eds.). The Sibley Guide to Bird Life and Behavior. New York: Alfred A. Knopf. pp. 68–69. ISBN 978-1-4000-4386-6.
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