Pandion haliaetus vs sea eagle

Pandion haliaetus

sea eagle

noun
  • An eagle with a distinctive white tail; specifically, the white-tailed eagle (Haliaeetus albicilla). 

  • A genus of eagles (genus Haliaeetus). 

How often have the words Pandion haliaetus and sea eagle occurred in a corpus of books? (source: Google Ngram Viewer )