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Coordinators: Albert de Jong Leon Kelder Roland-Jan Buijs Thijs Horst Merijn Loeve Mars Muusse |
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location | May 1st, 2022: nest location. | April 27th, 2022: 3 eggs. | . |
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partner 1 | May 1st, 2022: partner 1 is argenteus. | April 27th, 2022: partner 1 is argenteus. | . |
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pullus | May 17th, 2022: pullus metal ringed. | May 17th, 2022: pullus r[6.G], sibling of r[6.F]. | . |
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pullus | May 27th, 2023: pullus g[8|+]. | May 27th, 2023: pullus g[9|E]. | May 27th, 2023: pullus g[9|F] (LBBG chick from neighbour). |
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pullus | June 18th, 2024: pullus g-C|W. | May 14th, 2024: pullus g-C|X. | June 18th, 2024: pullus g-C|Y. |
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Visits and data:
Estimation egg laying: A-egg = April 19 2022. Estimating hatching = May 17 2022.
date: | |||||||
15-04-2022 | adult near empty nest. | ||||||
19-04-2022 | 2 adult Herring gulls present. | ||||||
egg no: | width (mm): | length (mm): | volume (cm3): | ||||
27-04-2022 | A | 48,4 | 66 | -- | 35 - tip bottom | 3 eggs | |
B | 47,6 | 66,7 | -- | 80 - tip bottom | |||
C | 48,6 | 66,9 | -- | 50 - tip bottom | |||
sum nest: | -- | ||||||
egg no: | 3 eggs, 1 adult has short white tongue on P10: hybrid? | ||||||
29-04-2022 | A | float - 4 mm | |||||
B | float - 4 mm | ||||||
C | float - 5 mm | ||||||
01-05-2022 | Herring Gull at nest. | ||||||
04-05-2022 | 3 eggs. | ||||||
09-05-2022 | 3 eggs. | ||||||
17-05-2022 | 2 eggs. A egg hatching, small hole. C egg in tact, B chick ringed, only metal ring. |
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metal | darvic | mass | H+B | wing | |||
17-05-2022 | .5625101 | -- | -- | -- | -- | (chick just hatched, 1 day old) | |
22-05-2022 | .5625101 | r-6.G | 186 | 62,6 | 38 | ||
22-05-2022 | .5625159 | r-6.F | 114 | 57 | 33 | chick near nest 61Z, but very likely (99%) from nest 123. >> see 123Z | |
22-05-2022 | C egg still in nest (infertile). Chick rate: 1 out of 3 eggs. | ||||||
metal | darvic | mass | H+B | wing | bill | ||
30-05-2022 | .5625101 | r-6.G | 490 | 81 | 95 | 32 | |
30-05-2022 | .5625159 | r-6.F | 385 | 77,8 | 70 | 29 | |
12-07-2022 | picture of r[6.G]. | ||||||
egg sizes & volume 2023 | ||||||||||||
SPECIES | NEST | A_length | A_width | A_volume | B_length | B_width | B_volume | C_length | C_width | C_volume | TOTAL NEST: | known parents? |
teus x teus | 61Z | 67,3 | 49 | 81,36 | -- | -- | -- | -- | -- | -- | 81,36 | same as 2022 |
ring pulli: nn | laying A egg: nn | hatch A egg: nn | ||||||||||
catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | ||||||
Pullus | 27-5-2023 | 5.625.280 | g-8|+ | 210 | -- | teus | in cluster van nesten. | |||||
Pullus | 27-5-2023 | 5.625.282 | g-9|F | 218 | -- | KMM | Observed it with 2 LBBG parents (positive interaction). | |||||
Pullus | 27-5-2023 | 5.625.283 | g-9|E | 230 | -- | teus | in cluster van nesten. |
61Z-2023 | Herring Gulls | ||
dam: | dam 1 west | ||
location: | Is in front of n[F|N]. Same as 61-2022. | ||
breeders: | teus x teus | ||
OBSERVATIONS: | |||
22-04-2023 | nest | 1 egg. | |
27-04-2023 | adult: | 2x Herring Gull partners. | |
13-05-2023 | adult: | 2x Herring Gull partners. | |
27-05-2023 | pulli: | 2x teus pulli ringed. Later a 3rd (g-9|F) pullus ringed at this very same location, believed to belong to 61 as well. But from boat we observed it with LBBG parents (positive interaction). | |
61Z-2024 | Herring Gulls | ||
dam: | dam 1 west | ||
location: | Is in front of n[F|N]. Same as 61-2022 & 61-2023. | ||
breeders: | teus x teus |
age: | date: | metal: | darvic: | mass: | wing: | head+bill: | ||||||
Pullus | 31-05-2024 | .5631122 | g-C|W | Herring Gulls nest 61Z | ||||||||
Pullus | 31-05-2024 | .5631123 | g-C|X | |||||||||
Pullus | 31-05-2024 | .5631124 | g-C|Y | |||||||||
Pullus | 04-06-2024 | .5631122 | g-C|W | 461 | 98 | 82,3 | CONTROLL | |||||
Pullus | 04-06-2024 | .5631123 | g-C|X | 461 | 112 | 83,1 | CONTROLL | |||||
Pullus | 04-06-2024 | .5631124 | g-C|Y | 445 | 80 | 83,4 | CONTROLL | |||||
Pullus | 18-06-2024 | g-C|W & g-C|Y present at dam. |