Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Breeding biology
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Breeding species
Hybrid scores
Ring codes
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Nests at Lelystad 2023
nest y-PNED
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X60J
nest y-XCHP
nest w-327:U
nest n-F|6
nest n-F|8
nest n-F|+
nest n-F|N
nest r-6B
nest r-CG
nest w-8Z
nest 003
nest 006
nest 013
nest 014
nest 015
nest 017
nest 017B
nest 018
nest 019
nest 021
nest 026
nest 033
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053
nest 055
nest 060
nest 061Z
nest 062
nest 063
nest 107Z
nest 108
nest 109
nest 111
nest 112
nest 127Z
nest 131Z
nest 132 YLG
nest 135
nest 139
nest 147Z
nest 154
nest 163
nest 167
nest 168
nest 204
nest 206
nest 207
nest 223
nest 227
nest 230Z
nest 231
nest 244Z
nest 245Z
nest 248
nest 251
nest 252
nest 253
nest 254
nest 255Z
nest 256Z
nest 262 |
Caspian Gull cachinnans 8|D 1CY-2CY, July 2023 - March 2024, the Netherlands. Picture: Hans van Muiswinkel, Ben Haven, Thijs Horst & Mars Muusse.
Tibia ring G-8|D and metal NLA 5.625.252, ringed as pullus Larus cachinnans on May 27 2023 in nest 223 at Lelystad, the Netherlands. Ringed by Merijn Loeve / Roland-Jan Buijs ringing team.
Recoveries
27-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
18-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
02-01-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
04-01-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
15-01-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
01-02-2024 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
13-02-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Ben Haven
28-02-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
03-03-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Thijs Horst & Mars Muusse
07-03-2024 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
egg sizes & volume 2023 |
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SPECIES |
NEST |
A_length |
A_width |
A_volume |
B_length |
B_width |
B_volume |
C_length |
C_width |
C_volume |
TOTAL NEST: |
known parents? |
cach x cach |
223-2023 |
77,1 |
50,4 |
98,61 |
73,9 |
47 |
82,19 |
71,3 |
47,7 |
81,68 |
262,48 |
? |
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ring pulli: May 28 |
laying A egg: April 23 |
hatch A egg: May 21 |
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catch: |
date: |
metal: |
darvic: |
mass: |
wing: |
head+bill: |
bill: |
gonys: |
greytone: |
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Pullus |
27-5-2023 |
5.625.251 |
g-8|B |
70 |
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Pullus |
27-5-2023 |
5.625.252 |
g-8|D |
120 |
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Pullus |
27-5-2023 |
5.625.253 |
g-8|E |
136 |
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Pullus |
18-6-2023 |
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g-8|E |
773 |
206 |
105,9 |
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Pullus |
18-6-2023 |
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g-8|B |
671 |
174 |
96,9 |
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223-2023 (was yX540-2022) |
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dam: |
dam 2 central |
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location: |
5 mtr N of nest 17, visible from N-side. Same as 2022, then X540. |
breeders: |
cach x cach |
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OBSERVATIONS: |
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04-04-2023 |
adult: |
2 cach present, but not y-X540. |
09-04-2023 |
nest: |
empty, but nest is ready. |
26-04-2023 |
nest: |
2 eggs. Location is old red spot = 223/yX540. Eggs measured, no water test. |
11-05-2023 |
nest: |
3 eggs, C egg measured |
18-05-2023 |
nest: |
3 eggs |
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27-05-2023 |
pulli: |
3x ringed. |
18-06-2023 |
pulli: |
g-8|B & g-8|E trapped in water, with net. Measured. Not in fledged cohort, too young. |
08-07-2023 |
pulli: |
g-8|B, g-8|D & g-8|E present: 3 chicks fledged. |
below: Caspian Gull cachinnans 8|D 2CY, March 07 2024, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.
below: Caspian Gull cachinnans 8|D 2CY, March 03 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8|D 2CY, February 13 2024, Bunschoten-Spakenburg, the Netherlands. Picture: Ben Haven.
below: Caspian Gull cachinnans 8|D 2CY, February 01 2024, Almere - De Vaart, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 8|D 1CY, July 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 8|D 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
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