| Coordinator: Albert de Jong
 Merijn Loeve
 Roland-Jan Buijs
 Thijs Horst
 Leon Kelder
 Mars Muusse
 Home Project InfoLocation Lelystad
 Location De Kreupel
 2019 Lelystad
 2020 Lelystad
 2021 Lelystad
 Coded nests  Lelystad
 2020 De Kreupel
 2021 De Kreupel
 Coded nests  De Kreupel
 All ring codes 2020
 All ring codes 2021
 Lelystad 2020:nest 001
 nest 002 yPNED
 nest 003
 nest 005 yPLDP
 nest 006 yPESV
 nest 008 gXLDT
 nest 009
 nest 011
 nest 012
 nest 013
 nest 014
 nest 015
 nest 016
 nest 017
 nest 018
 nest 021
 nest 025
 nest 027
 nest 028
 nest 029
 nest 031
 nest 032
 nest 033
 nest 034
 nest 035
 nest 036
 nest 037
 nest 038
 nest 039
 pair A
 pair B
 Lelystad 2021nest  y-PNED
 nest  y-PLDP
 nest  y-PHSV
 nest  y-P:A02
 nest  y-P:U60
 nest zy-MT
 nest  r-FB
 nest  r-FC
 nest 001
 nest 003
 nest  006
 nest 011
 nest 012
 nest 013
 nest 014
 nest 015
 nest 016B
 nest 017
 nest 018
 nest  019
 nest 021
 nest 034
 nest 035
 nest 038
 nest 040
 nest 041
 nest 042
 nest 044
 nest 045
 nest 046
 nest 047
 nest 048
 nest 053
 nest 055
 nest 056
 nest 058
 nest 060
 nest 062
 nest 063
 nest 065
 nest 066
 nest 067
 nest 072
 |   Gull spec. F.H  1CY, June 26 2021, Lelystad, the Netherlands. Picture: Jeroen Nagtegaal & Mars Muusse. Red  tibia  ring r[F.H], ringed as pullus Larus cachinnans on June 26 2021 very near nest 54 in colony Lelystad, the Netherlands.ID  uncertain,    but IF from nest 54, then both parents are known (Herring Gull and Herring x Yellow-legged Gull).
 Inner primaries are no good match for Herring Gull argenteus, which normally has the outerwebs of the inner primaries obvious paler as well. So, maybe an F2-crossback, offspring from nest 54; or maybe cachinnans?Hopefully it will be recorded (and photographed) in the coming years...
 
 
 
 
 
 Visits and data. 
        
        
        
        
        
        
          | date: |  |  |  |  |  |  |  |  
          | 30-3-2021 | ZY-MT patrolling near nest 054. Controlling air by chasing other birds. |  
          | 16-4-2021 | Nest checked. No eggs. |  
          |  | egg no: | width (mm): | length (mm): | volume (cm3): | water test on April 24th: | laying date: |  |  
          | 24-4-2021 | A | 50,5 | 71,1 | 91,30 | 20 - tip bottom |  |  |  
          | 24-4-2021 | B | 49,8 | 67,2 | 83,91 | 30 - tip bottom |  |  |  
          | 24-4-2021 | C | 48,4 | 63,3 | 74,66 | 20 - tip bottom |  |  |  
          |  |  |  | sum nest: | 249,87 |  |  |  |  
          |  |  |  |  |  |  |  |  |  
          | 26-4-2021 | Both parters on look-out near nest. Herring Gull not ringed. |  
          | 13-5-2021 | Idem. |  |  |  |  |  |  |  
          | 15-5-2021 | Nest complete, 3 eggs. |  |  |  
          |  |  | metal ring | darvic ring | mass |  |  |  |  
          | 28-5-2021 | pullus | .5559378 | b-S|X | 109 | age: 2 / 3 days old |  |  |  
          | 28-5-2021 | pullus | .5559379 | b-S|Y | 133 |  |  |  |  
          | 28-5-2021 | pullus | .5559380 |  | 59 | too small for darvic ring |  |  |  
          | 8-6-2021 | both parters on look-out near nest. |  |  |  
          |  |  | metal ring | darvic ring | mass | head + bill | wing |  |  
          | 26-6-2021 | pullus | .5559379 | b-S|Y | 676 | 104,2 | 293 | Pullus controlled. |  
          | 26-6-2021 | pullus | .5550682 | r-F.H | 734 | 98,3 | 225 | Likely a chick hatched from a neighbouring nest next to 054. |  
          | 26-6-2021 |  |  |  |  |  |  | Large juvenile flies off to water. Maybe b[S|X]??? |  
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