| 2026-05-12 | Birdbrain |
| 2026-03-22 | Bygone bird |
| 2026-02-02 | Bird that scientists are trying to bring back from extinction |
| 2025-09-14 | Imbecile |
| 2024-10-23 | Bird symbolizing obsolescence |
| 2024-10-02 | Airhead |
| 2024-09-25 | Bird in "Alice in Wonderland" |
| 2024-08-04 | Wonderland bird |
| 2022-10-24 | Extinct bird that wasn't really "dumb" |
| 2022-03-29 | Chowderhead |
| 2021-08-18 | Bird that had no natural predators until humans arrived |
| 2021-07-21 | Bird with a reduplicative name |
| 2021-04-25 | Knucklehead |
| 2021-04-07 | Dumb bunny |
| 2021-03-03 | Bird in "Alice's Adventures in Wonderland" |
| 2020-11-23 | "Dumb" bird |
| 2020-01-12 | Dummy |
| 2019-02-24 | Bird akin to the nene? |
| 2018-05-22 | Numbskull |
| 2018-04-06 | Nincompoop |
| 2018-02-27 | Epitome of stupidity |
| 2018-01-08 | "Dumb" bird |
| 2017-12-02 | Bubblehead |
| 2017-05-10 | Slow-witted sort |
| 2017-05-07 | Blockhead |
| 2017-05-05 | Dummkopf |
| 2017-03-29 | Dim bulb |
| 2017-03-12 | Numbskull |
| 2016-07-24 | Dummy |
| 2016-06-02 | Knucklehead |
| 2015-11-08 | Dummy |
| 2015-08-09 | Dullard |
| 2015-02-28 | Nincompoop |
| 2014-12-28 | Birdbrain |
| 2014-12-27 | Ninny |
| 2014-10-17 | Dummy |
| 2013-11-26 | Airhead |
| 2013-08-25 | Dummy |
| 2013-08-22 | Dimwit |
| 2013-04-05 | Awarder of a thimble to Alice, in "Alice's Adventures in Wonderland" |
| 2012-08-05 | "Alice in Wonderland" character |
| 2012-02-24 | Dimwit |
| 2011-08-22 | Dumb ox |
| 2011-04-13 | Nitwit |
| 2011-02-25 | Dummy |
| 2010-10-23 | Part of Mauritius's coat of arms |
| 2010-05-21 | Animal on Mauritius's coat of arms |
| 2009-04-05 | Bye-bye birdie? |
| 2008-09-17 | Thickhead |
| 2008-04-13 | Numbskull |
| 2008-03-04 | Long-gone bird |
| 2007-10-01 | Dumbbell |
| 2006-07-24 | Extinct bird |
| 2005-08-10 | Dumbbell |
| 2004-10-01 | Lamebrain |
| 2004-09-20 | One slow on the uptake |
| 2004-04-18 | Dummy |
| 2003-12-11 | Dull-witted one |
| 2003-11-16 | Dummkopf |
| 2003-08-06 | Numbskull |
| 2003-04-01 | Knucklehead |
| 2002-06-12 | Dumb cluck |
| 2002-01-28 | Birdbrain |
| 2001-10-01 | Extinct bird |
| 2000-09-28 | Old fogy |
| 2000-07-06 | Numbskull |
| 2000-04-30 | Bird that's more than rare |
| 2000-04-20 | Nitwit |
| 1999-11-23 | Pinhead |
| 1999-09-24 | Wonderland bird |
| 1999-09-05 | Winged one in Wonderland |
| 1999-06-29 | A genius? No |
| 1999-05-04 | Dummy |
| 1999-03-24 | Dummy |
| 1999-03-03 | No Einstein |
| 1999-02-04 | Dumb cluck |
| 1998-01-28 | Dumbbell |
| 1997-10-01 | ___ bird |
| 1997-07-21 | Fuddy-duddy |
| 1997-02-10 | Extinct bird not known for its intelligence |
| 1996-11-04 | Dumbbell |
| 1996-09-15 | Dummy |
| 1996-06-25 | Dunderhead |
| 1996-02-18 | Numbskull |
| 1994-12-06 | Idiot |
| 1994-07-14 | Extinct bird |
| 1994-06-13 | Old fogy |