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Do keas usually attack healthy sheep?

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Illustration of a rock parakeet (Pyrrhura rupicola) perched on a branch, showing green plumage with scalloped markings, a patch of red on the wing, and a dark beak. — Psittaciform Black-capped parakeet (*Pyrrhura rupicola*).

Keas (Nestor notabilis) do not typically attack healthy sheep. Instead, these New Zealand parrots occasionally tear into sheep carcasses or, more rarely, target weakened sheep to reach the fat surrounding the kidneys.1