Historical clue formulations

• Melodious yellow bird — 2025-05-26
• Vivid shade of yellow — 2025-03-23
• Tweety Bird, e.g. — 2024-12-25
• Bright shade of yellow — 2024-12-07
• Bird in an early warning system — 2024-03-07
• With 59-Across, harbinger of danger — 2023-06-28
• Bird whose Latin root means "dog" — 2023-02-10
• Raiser of alarm in a coal mine — 2021-08-17
• Little bird of mine? — 2021-05-04
• One who sings to the cops — 2009-10-13
• Bird in a cage — 2004-09-27
• Singer — 1998-11-14
• Informer — 1998-05-08
• One who sings — 1996-09-07
• Yellow bird — 1996-05-06
• Informer — 1993-11-24