as a duck takes to water vs like shooting fish in a barrel

as a duck takes to water

like shooting fish in a barrel

prep

  • Extremely easy; sometimes with a connotation of triumph but at other times with a connotation of being meaningless and unsatisfying. 

How often have the words as a duck takes to water and like shooting fish in a barrel occurred in a corpus of books? (source: Google Ngram Viewer )