broadwing vs white-tailed eagle

broadwing

noun
  • In falconry, a bird of prey of the buzzard or eagle type, having long wings and long flight feathers. 

white-tailed eagle

noun
  • A sea-eagle with a distinctive white tail; (Haliaeetus albicilla). 

How often have the words broadwing and white-tailed eagle occurred in a corpus of books? (source: Google Ngram Viewer )