Historical clue formulations

• Ground-dwelling songbird — 2020-09-13
• Larklike songbird — 2012-10-17
• Larklike bird — 2011-09-27
• Bird notable for walking rather than hopping — 2009-05-09
• Lark look-alike — 2003-05-10
• Small songbird — 1999-11-03
• Titlark — 1998-01-13