Historical clue formulations

• Sparrows : cheeps :: crows : ___ — 2026-08-24
• Harsh cries — 2024-04-25
• Rookery cries — 2017-11-05
• Corvine calls — 2017-10-07
• Crows' cries — 2015-11-15
• Crows' cries — 2014-10-13
• Hoarse cries — 2013-07-11
• Ravens' cries — 2012-07-22
• Cornfield sounds — 2010-09-28
• Calls in the field — 2008-03-29
• Harsh cries — 2007-11-15
• Calls in a field — 2007-10-13
• Field calls — 2007-09-16
• Crows' cries — 2006-07-04
• Field calls — 2004-09-30
• Unmelodic sounds — 2004-02-22
• Sounds from a cornfield — 2003-03-04
• Avian sounds — 2001-06-15
• Raven sounds — 1999-10-10
• Crow calls — 1999-03-24
• Cornfield sounds — 1998-11-22
• As the crow cries — 1997-04-27
• Ravens' ravin's? — 1994-12-18
• Bird calls — 1994-06-11