Historical clue formulations

• Romp — 2026-05-16
• Bit of carefree fun — 2024-01-21
• On a ___ — 2023-09-21
• "The Song of the ___" (Willa Cather novel) — 2023-01-04
• Frolic — 2021-12-28
• Joy ride, for example — 2021-04-02
• Caper — 2020-08-15
• Bird symbolizing daybreak — 2019-02-08
• Fun adventure — 2018-09-16
• Carefree adventure — 2016-11-08
• Pacer — 2016-09-15
• Happy as a ___ — 2016-03-07
• Merry adventure — 2015-10-14
• Prankster's activity — 2015-08-28
• It's just for fun — 2015-06-20
• Romp — 2014-07-19
• Meadow bird — 2014-05-19
• Bit of harmless mischief — 2014-02-05
• Escapade — 2012-09-16
• Caper — 2011-05-14
• See 38-Across — 2010-09-13
• Brownish songbird — 2008-12-14
• Caper — 2008-02-22
• Escapade — 2007-10-22
• Shenanigan — 2006-09-21
• Caper — 2005-08-14
• Paradigm of happiness — 2004-12-19
• Bird that "at heaven's gate sings," in Shakespeare — 2004-08-04
• Just-for-fun activity — 2004-06-09
• Carefree outing — 2003-03-09
• Frolic — 2002-04-29
• Symbol of happiness — 2002-03-31
• Carefree adventure — 2000-05-30
• Songbird — 1999-03-03
• Escapade — 1998-06-23
• Caper — 1997-10-04
• Harmless prank — 1997-04-16
• Escapade — 1996-04-10
• Escapade — 1995-08-30
• Escapade — 1995-08-02
• Escapade — 1995-01-29
• Songbird — 1994-12-19
• Shenanigan — 1994-12-03
• Escapade — 1994-07-15
• Meadow bird — 1994-05-30