Answers to BILL portion of Bird Quiz #2: Ruby-crowned Kinglet vs. Hutton’s Vireo (1) Hutton’s Vireo (2) Ruby-crowned Kinglet (3) Hutton’s Vireo (4) Hutton’s Vireo Share this: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Reddit (Opens in new window) Reddit