: a bluebird (Sialia currucoides) of western North America having a blue-breasted rather than red-breasted male
Example Sentences
Recent Examples on the WebBut even in the final days of 2020, the friends — Goldberg a 24-year-old Chicago native and Huggins, a 47-year-old originally from England — were still birding together, adding a mountain bluebird to their counts. Morgan Greene Chicago Tribune, Star Tribune, 19 Jan. 2021 Idaho's state bird status goes to the much less-threatening mountain bluebird. Ben Panko, Smithsonian, 3 Feb. 2017