mockingbird vs psittacine

mockingbird

noun
  • A long-tailed American songbird of the Mimidae family, noted for its ability to mimic calls of other birds. 

psittacine

noun
  • Any bird in the order Psittaciformes: a parrot. 

adj
  • Of or pertaining to parrots. 

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