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These are local recoveries and sightings of foreign ringed birds that we are aware of - a large proportion of Black-headed Gulls wintering in the Thames Valley are from further east in Europe.
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Foreign Colour ringed birds
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T8AU
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Kolonia Legowa, River Notec, Szamocin, Wielkopolskie, Poland
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27 Jun 10
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Savernake Lake, Bracknell, Berkshire, 1226 km, WSW, 153 days
seen by J O’Brien and Stephen Abbott
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27 Nov - 4 Dec 11
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Ringed as a chick and spending it’s first winter in Berkshire
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K084
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Sosnovaya Polyana, Sankt-Petersburg, Russia Federation
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10/06/2010
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Dinton Pastures, Hurst, Berkshire, 2150 km, WSW, 278 days
Seen by Adam Bassett
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15/03/2011
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Hosehill Lake LNR, Berkshire, 2162 km, WSW, 331 days
Seen by Ken Moore
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07/05/2011
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Ringed as a chick and spending it’s first spring and summer in Berkshire
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N176
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CTRU Gomecello, Salamanca, Spain
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02/01/2011
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Hosehill Lake LNR, Berkshire, 1206 km, NNE, 129 days
Seen by Ken Moore
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11/05/2011
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VRSU Pinto, Madrid, Spain
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11/11/2011
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Ringed as a first winter at a rubbish dump and visiting Berkshire briefly in it’s first summer. Possibly a British bred bird. Returned to a slightly different part of Spain for it’s second winter.
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R17C
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Oye Plage, Le Platier, Pas-de-Calais, France
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07/06/2011
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Lea Farm Gravel Pit, Hurst, Berkshire, 210 km, WNW, 50 days
Seen by Geoff Emmett
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27/07/2011
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Ringed as a chick - like some of our birds it moved quickly west after fledging.
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Metal ringed birds
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Denmark
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Fiskeholm, Agernaes, Fyn, Denmark
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8 Jun 1994
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6254706
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Freshly dead, Maiden Erlegh Park, Earley, Berkshire, 838 km, WSW
13 years 214 days
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8 Jan 2008
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Finland
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Rovaniemi, Lappi, Finland
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9 Jul 1998
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ST198079
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Field sighting Wokingham, Berkshire, 2,242km, SW, 9 years 223 days
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Finland
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Espoo, Uusimaa, Finland
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22/07/2007
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ST261425
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Field sighting Caversham Bridge, Caversham, Berkshire, 1859 km, WSW,
3 yrs 154-157 days
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23-26 Dec 2010
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Map of Foreign ringed birds recorded locally
Foreign ringed Black-headed Gull Records
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KEY
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Age Codes
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Ringing location
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1
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pullus (nestling or chick)
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1st Autumn (Jun-Oct)
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2
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fully grown, year of hatching unknown
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1st Winter (Nov-Mar)
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3
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hatched during current calendar year
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1st Summer (Apr-Jul)
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4
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hatched before current calendar year
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2nd Autumn (Aug-Oct)
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5
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hatched during previous calendar year
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2nd Winter (Nov-Mar)
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6
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hatched more than 1 calendar years before
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2nd Summer (Apr-Jul)
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7
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definitely hatched 2 calendar years before
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3rd Autumn (Aug-Oct)
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8
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hatched more than 2 calendar years before
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3rd Winter (Nov-Mar)
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9
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definitely hatched 3 years before
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Adult Summer (Apr-Jul)
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10
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hatched more than 3 calendar years before
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Adult Autumn (Aug-Oct)
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11
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definitely hatched 4 years before
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Adult Winter (Nov-Mar)
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12
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hatched more than 4 calendar years before
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Lines are drawn between consecutive records and are the colour of the end record.
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