Parus atricapillus vs black-capped chickadee

Parus atricapillus

black-capped chickadee

noun

  • Poecile atricapillus, a small bird of the tit family Paridae 

How often have the words Parus atricapillus and black-capped chickadee occurred in a corpus of books? (source: Google Ngram Viewer )