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• a  relating to or characteristic of birds of prey
  raptorial claws and bill for seizing prey
• s  living by preying on other animals especially by catching living prey
  raptorial birds

• It still had fully-functional raptorial claws on its thumb and middle fingers, but its index finger the finger that supports the flight feathers .

• predatory
• rapacious
• ravening
• vulturine
• vulturous