Definition of duck hawk in English:

duck hawk

noun

North American
dated
  • The peregrine falcon.

    • ‘That impressive collection includes historical images from the 1930s and 1940s of many of the eyries formerly occupied by the eastern ‘duck hawks.’’
    • ‘It was the European counterpart of our duck hawk that furnished royal sport in the Middle Ages.’
    • ‘It is exciting to watch the duck hawk in pursuit of his prey.’