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Ring-billed Gull
Larus delawarensis
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| Age | Date | County | Country | Comments |
 | 1st cal.-year | Nov 1989 | Hordaland | Norway | 2 in-hand photos |
| 1st cal.-year | Dec 2003 | Reykjavik | Iceland | 2 photos |
| 1st cal.-year | Dec 2008 | Hordaland | Bergen | 3 photos |
| 1 | | | | | |
| 2nd cal.-year | Jan 1990 | Hordaland | Norway | 2 in-hand photos |
| 2nd cal.-year | Jan 1993 | Hordaland | Norway | 2 photos |
| 2nd cal.-year | Jan 1999 | Hordaland | Norway | 4 photos |
| 2nd cal.-year | Mar 1998 | Rogaland | Norway | 6 photos |
| 2nd cal.-year | Apr 2001 | Oslo | Norway | 6 photos |
| 2nd cal.-year | Apr 2001 | Rogaland | Norway | |
| 2nd cal.-year | May 2006 | Hordaland | Norway | 10 photos |
| 2nd cal.-year | Jul 1995 | Finnmark | Norway | |
| 1 | | | | | |
| 3rd cal.-year | Jan 2000 | Hordaland | Norway | |
| 3rd cal.-year | Feb 2002 | Oslo | Norway | 2 photos |
| 3rd cal.-year | May 1998 | Rogaland | Norway | Spread-wing |
| 1 | | | | | |
| 3+ cal.-years | Aug 1986 | Hordaland | Norway | |
| 3+ cal.-years | Oct 1990 | Hordaland | Norway | 2 images |
| 1 | | | | | |
| 4+ cal.-years | Jan 1991 | Hordaland | Norway | |
| 4+ cal.-years | Feb 2002 | Hordaland | Norway | 5th. cy; 2 images |
| 4+ cal.-years | Mar 2002 | Hordaland | Norway | 2 images |
| 4+ cal.-years | Apr 1987 | Hordaland | Norway | |
| 4+ cal.-years | May 1998 | Sør-Trøndelag | Norway | Flightshot |
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