Peter Rock’s Cohorts pete.rock@urbangulls.com
Please do keep a look out for ringed Herring Gulls and Lesser Black Backed Gulls in the Bristol and Bath region.
Peter has ringed an amazing 10,000 of them, and so far has 90,000 post-fledging records.
Bristol birds have been logged travelling a massive cumulative 9.2 million kilometres!
This is the same as 13 years of non-stop Bristol to London car journeys.
Peter uses the info to understand more about the behaviour of gulls in cities:
-they learn where the food sources are
-when it is lunch time at local schools
-when bin days are
And they help clear up after Glastonbury Festival.
The Bristol Study is unique, and can help us learn about any changes to behaviour as well as things like finding new breeding sites.
Please report any sightings to pete.rock@urbangulls.com
All birds are ringed as nestlings. Large colour-rings, always on RIGHT tarsus with metal on left tarsus.
Year | Cohort | Ring | Code | Notes |
1980 | YELLOW1 | AA | Black | Thin letters. |
1981 | ORANGE1 | AA | Black | Thin letters. |
1982 | WHITE1 | AA | Black | Thin letters. |
1983 | SKY1 | AA | Black | Thin letters. |
1984 | GREEN1 | AA | White | Thin letters. |
1985 | MAUVE1 | AA | White | Thin letters. |
1986 | BLACK1 | AA | White | Thin letters. |
1987 | RED1 | AA | White | Thin letters. |
1988 | PG1 | AA | Black | Thin letters. |
1989 | BLUE1 | AA | White | Thin letters. Mid Blue (now greyish) |
1990 | BROWN1 | AA | White | Thin letters. |
1991 | ORANGE2 | AA | White | |
1992 | WHITE2 | AA | Red | |
1993 | YELLOW2 | AA | Black | |
1994 | BLACK2 | AA | Yellow | |
1995 | ORANGE3 | AA | Black | |
1996 | GREEN2 | AA | White | |
1997 | WHITE3 | AA | Blue | |
1998 | BLUE2 | AA | White | Dark Blue. |
1999 | RED2 | A.A | White | Stop between letters. |
2000 | ORANGE4 | A:A | Green | Colon between letters. Orange now yellowish |
2001 | YELLOW3 | A:A | Black | Colon between letters. |
2002 | PG2 | A:A | Black | Colon between letters. |
2003 | WHITE4 | A:A | Green | Colon between letters. |
2004 | BLUE3 | A:A | Orange | Colon between letters. Dark Blue. |
2005 | GREEN3 | A:A | White | Colon between letters. |
2006 | BLACK3 | A:A | Yellow | Colon between letters. |
2007 | WHITE5 | A:A | Red | Colon between letters. |
2008 | RED3 | A:A | Black | Colon between letters. |
2009 | GREY1 | A+A | Red | Plus between thin letters. |
2010 | BLUE4 | A+A | White | Plus between thin letters. Mid Blue. |
2011 | WHITE6 | A+A | Green | Plus between thin letters. |
2012 | BLACK4 | A+A | Yellow | Plus between thin letters. |
2013 | YELLOW4 | A+A | Black | Plus between thin letters. |
2014 | PG3 | A+A | Black | Plus between thin letters. |
2015 | ORANGE5 | A+A | Black | Plus between thin letters. |
2016 | RED4 | A+A | White | Plus between thin letters |
2017 | GREEN4 | A+A | White | Plus between thin letters |
2018 | WHITE7 | A=A | Black | Equals between letters |
2019 | BLUE5 | A=A | White | Equals between letters |
2020 | YELLOW5 | A=A | Black | Equals between letters |
2021 | ORANGE6 | A=A | Black | Equals between letters |
2022 | GREEN5 | A=A | White | Equals between letters |
2022 | WHITE8 | T=F | Black | Equals between letters from T=F onwards |
2023 | RED5 | A=A | White | Equals between letters |
2023 | RED6 | T+U | White | Plus between letters from T+U onwards |
