Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
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Breeding biology
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Nests at De Kreupel 2020
nest r-02P4 20
nest y-X804 20
nest D01 20
nest D02 20
nest D03 20
nest L01 20
nest L02 20
nest L03 20
nest M02 20
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 2.K 2CY, March 08 2023, Bunschoten, the Netherlands. Picture: Hans van Muiswinkel.
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Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl |
Red tibia R-2K and metal NLA Arnhem 5.623.540, ringed as pullus Larus cachinnans on 13-05-2022 at De Kreupel, Holland (5247.00 N 513.00 E) - ringer Leon Kelder.
ID certain: both parents are Caspian Gulls.
Recoveries:
08-03-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
19-06-2023 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
Bird from De Kreupel, nest M8 on island M. Data for this nest:
Date: |
Egg code |
Height (mm) |
Width (mm) |
Comments |
Metal NLA |
Colour ring |
Wing (mm) |
Head+ bill (mm) |
Bill (mm) |
Mass (gr) |
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14-4-2022 |
A-egg |
68.4 |
47.5 |
3 eggs |
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B-egg |
65.3 |
47.8 |
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C-egg |
66.0 |
47.0 |
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29-4-2022 |
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3 eggs |
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13-5-2022 |
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3 pulli in nest |
5623539 |
Red 2.H |
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62.7 |
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179 |
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5623540 |
Red 2.K |
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58.0 |
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132 |
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5623541 |
Red 2.L |
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55.6 |
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112 |
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6-5 - 9-5-2022 camera trap: |
female Caspian Gull |
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male Caspian Gull |
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below: Caspian Gull cachinnans 2.K 2CY, March 08 2023, Bunschoten, the Netherlands. Picture: Hans van Muiswinkel.
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