Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Breeding biology
Fecundity
Food resources
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Breeding species
Hybrid scores
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Nests at De Kreupel 2021
nest r-02P4 20
nest w-201U 21
nest g-XLHD 21
nest r-KA 21
nest r-KB 21
nest r-KC 21
nest r-KD 21
nest r-KE 21
nest r-KF 21
nest r-KH 21
nest r-KJ 21
nest r-KK 21
nest A01 21
nest C03 21
nest C04 21
nest C06 21
nest D01 21
nest D03 21
nest D05 21
nest D06 21
nest D07 21
nest D08 21
nest E01 21
nest H01 21
nest L01 21
nest L02 21
nest L05 21
nest L06 21
nest L07 21
nest M01 21
nest M04 21
nest M06 21
nest Q01 21
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Caspian Gull cachinnans D|P 1CY, May - June 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Blue tibia ring b[D|P], ringed as pullus Larus cachinnans on May 14 2021 at nest C03 21 in colony De Kreupel, the Netherlands.
ID uncertain, parents unknown.
below: Caspian Gull cachinnans D|P 1CY, May 20 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
below: Caspian Gull cachinnans D|P 1CY, June 11 2021, De Kreupel - C, the Netherlands. Picture: Leon Kelder.
Date: |
details: |
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23-4-2021 |
2 eggs in nest. |
egg no: |
width (mm): |
length (mm): |
volume (cm3): |
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A egg |
50.9 |
63.6 |
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B egg |
50.9 |
68.9 |
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Attempt to trap breeding adult. Failed. |
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14-5-2021 |
2 eggs in nest. |
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20-5-2021 |
2 chicks in nest. |
metal: |
tibia: |
mass (gr): |
head + bill: |
tarsus: |
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Prey: 3x Roach. |
NLA 5.556.751 |
b-D|N |
115 |
56.5 |
32.2 |
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https://waarneming.nl/observation/214707132/ |
NLA 5.556.752 |
b-D|P |
73 |
47.8 |
27.0 |
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11-6-2021 |
2 chicks near nest. |
metal: |
tibia: |
mass (gr): |
head + bill: |
wing: |
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https://waarneming.nl/observation/216984848/ |
NLA 5.556.751 |
b-D|N |
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104.4 |
228.5 |
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NLA 5.556.752 |
b-D|P |
681 |
93.3 |
182.5 |
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