| 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
   |  Cachinnans - nest Lelystad  PESV (2020: 006)
General remarks: 
                  Eggs: Volume measured by  Stonehouse (1964) and  Spaans & Spaans (1975), which make comparison possible with data from Texel (Camphuysen pers comm 16.04.2020).Nest 006 positioned in dense Blackberry vegetation, in vicinity of Spoonbill nests, on artificial breakwater 1 at T-split.        Certainty on ID in 2020,  breeders are Caspian Gull cachinnans, one partner is ringed yellow PESV 10CY, and one unringed partner. Neighbours of yellow PLDP (nest 005 in 2020).In 2021 nest location taken by other pair, which are Caspian Gulls cachinnans. y[PESV] not present in colony in 2021. 
        
          | location | Nest in vegetation 2020. | Nest location on  April 15th, 2020. |  |  
          |  |  |  |  |  
          | eggs | Eggs April 15th, 2020: 3 eggs clutch. | Eggs April 27th, 2020: 3 eggs clutch. |  |  
          |  |  |  |  |  
          | partner 1 | May 7th, 2020: cachinnans y[PESV]. | April 15th, 2020: cachinnans y[PESV]. | . |  
          |  |  |  |  |  
          | partner 2 | May 7th, 2020: cachinnans unringed. | May 7th, 2020: cachinnans unringed. | May 7th, 2020: cachinnans unringed. |  
          |  |  |  |  |  
          | pulli | May 21st, 2020: pullus ringed n[F|1]. | May 21st, 2020: pullus ringed n[F|7]. | June 2nd, 2020: n[F|1] & n[F|7] & unringed pullus. |  
          |  |  |  |  |  Visits and data. 
        
        
        
        
        
        
          | datum: | egg no: | width (mm) | length (mm) | volume (cm3): |  |  
          | 15-04-2020 | A | 51 | 71,8 | 94,03 | 3 eggs in nest. |  
          | 15-04-2020 | B | 51,4 | 70,9 | 94,31 |  |  
          | 15-04-2020 | C | 51,1 | 71,2 | 93,61 |  |  
          |  |  |  | sum nest: | 281,95 |  |  
          | 07-05-2020 | pullus |  |  |  | Nest with 3 small chicks (5 days old, 1 day old, 1 day old). |  
          |  |  |  |  |  |  |  
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          | 21-05-2020 | pullus | n[F|1] |  |  | 2 pulli ringed. |  
          | 21-05-2020 | pullus | n[F|7] |  |  | 2 pulli ringed. n[F|7] ringed beneath nest near water. |  
          |  |  |  |  |  |  |  
          | 02-06-2020 | pullus |  |  |  | 3 juveniles together, largest chick unringed swimming around. |  
          | 02-06-2020 | pullus |  |  |  | 3 juveniles together, including n[F|1]. |  
          | 02-06-2020 | pullus |  |  |  | 3 juveniles together, including n[F|7]. |  
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