Historical clue formulations

• Long-winged seabird — 2016-07-05
• Migratory seabird — 2014-02-23
• Antarctic dweller — 2009-05-23
• "Stormy" seabird — 2008-12-14
• Far-flying seabird — 2003-08-25
• Low-flying seabird — 2001-12-11
• Tube-nosed seabird — 1999-07-11
• Small sea bird — 1997-06-16
• "Stormy" sea bird — 1997-03-19