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How do African gray parrots react after detecting a predator?

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Close-up of an African grey parrot (Psittacus erithacus) showing its curved black beak, pale eye, and detailed grey feathers. — African gray parrot African gray parrot (*Psittacus erithacus*).

When a flock of African gray parrots detects a predator, they typically react by falling silent. This period of silence is then followed by the birds abruptly breaking cover and loudly screaming.1