Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
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Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future
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 7|1 1CY-2CY, May 2023 - September 2024, Lelystad & De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
Tibia G-7|1 and metal NLA 5.556.420, ringed as pullus Larus cachinnans on May 27 2023 in nest 253 at Lelystad, the Netherlands (5230.00 N 525.00 E).
Ringer Merijn Loeve / Roland-Jan Buijs ringing team.
Recoveries:
18-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
27-05-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
18-06-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-06-2023 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
15-07-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
20-01-2024 Den Hoorn (Mokbaai), Texel, NL 5.300,00 N 445,00 E colourring read Job ten Horn
19-03-2024 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Leon Kelder
20-03-2024 Wervershoof (Vooroever), Noord-Holland, NL 5.245,00 N 507,00 E colourring read Leon Kelder
06-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
10-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
11-07-2024 IJsselmeer (De Kreupel), Noord-Holland, NL 5.247,00 N 513,00 E colourring read Leon Kelder
07-09-2024 Andijk (Jachthaven), Noord-Holland, NL 5.244,00 N 510,00 E colourring read J. van Assema & T. Horst
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: |
cach x cach |
253-2023 |
77,7 |
48,3 |
91,27 |
75,3 |
49,4 |
92,52 |
74 |
50,8 |
96,15 |
279,94 |
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ring pulli: May 25 |
laying A egg: April 20 |
hatch A egg: May 18 |
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catch: |
date: |
darvic: |
metal: |
mass: |
head+bill: |
wing: |
bill: |
gonys: |
greytone: |
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Pullus |
18-5-2023 |
g-7|Z |
5.556.418 |
115 |
59,4 |
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Pullus |
18-5-2023 |
g-7|0 |
5.556.419 |
74 |
52 |
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Pullus |
18-5-2023 |
g-7|1 |
5.556.420 |
85 |
54 |
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Pullus |
27-5-2023 |
g-7|Z |
5.556.418 |
474 |
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Pullus |
27-5-2023 |
g-7|1 |
5.556.420 |
382 |
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Pullus |
18-6-2023 |
g-7|Z |
5.556.418 |
1057 |
126,0 |
294 |
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Pullus |
18-6-2023 |
g-7|1 |
5.556.420 |
1153 |
113,1 |
281 |
with 2x sibling |
Pullus |
25-6-2023 |
g-7|1 |
5.556.420 |
1089 |
127,3 |
339 |
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253-2023 |
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dam: |
dam 2 central |
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location: |
1 mtr W of nest 223, and 7 mtr N 17, only visible from N-side. |
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breeders: |
cach x cach |
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OBSERVATIONS: |
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26-4-2023 |
location: |
two nests at 1 mtr distance, 'behind' nest 17 (only visible from north). |
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nest: |
3 eggs. Measured and water test: |
A |
40 - tip bottom |
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B |
30 - tip bottom |
27-04-2023 |
adult: |
4CY cach and adult cach |
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C |
30 - tip bottom |
11-05-2023 |
nest: |
3 eggs |
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18-05-2023 |
pulli: |
3 chicks ringed |
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27-05-2023 |
pulli: |
2x control. |
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18-06-2023 |
pulli: |
g-7|Z & g-7|1 trapped for control. 3rd chick in group, no view on code, but likely g-7|0. Fledged: 3 chicks |
25-06-2023 |
pulli: |
2 chicks g-7|Z and g-7|1 (caught from group of 3, maybe his other 2 brothers.) |
below: Caspian Gull cachinnans 7|1 2CY, September 07 2024, IJsselmeer, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|1 1CY, July 15 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|1 1CY, July 08 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|1 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans 7|1 1CY, June 25 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|1 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 7|1 1CY, May 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst.
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