birdcall vs burst out

birdcall

verb
  • To imitate the cry of a bird. 

noun
  • Any vocalisation of a bird. 

  • An imitation of this cry. 

  • A device used to imitate this cry, so as to lure and catch birds. 

burst out

verb
  • To display sudden powerful emotion. 

  • To appear suddenly from within something else. 

  • To speak emotionally or suddenly 

How often have the words birdcall and burst out occurred in a corpus of books? (source: Google Ngram Viewer )