Coordinators:
Albert de Jong
Leon Kelder
Roland-Jan Buijs
Thijs Horst
Merijn Loeve
Mars Muusse
Home
Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future |
Caspian Gull cachinnans 1CY, June 18 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
This is the unringed sibling of g[7|N] and g[7|P], from nest PNED-2023 at Lelystad. In 2023: 3 fledged juveniles from nest PNED.
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? |
cach x cach |
PNED |
73,4 |
52,1 |
100,32 |
73,1 |
50 |
92,01 |
68 |
49,8 |
84,91 |
277,24 |
same as 2022 |
|
|
|
|
|
|
|
|
|
|
|
|
|
ring pulli: 9-mei |
laying A egg: 6-apr |
hatch A egg: 4-mei |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
catch: |
date: |
metal: |
darvic: |
mass: |
wing: |
head+bill: |
|
|
|
|
|
Pullus |
18-05-2023 |
5556405 |
G-7|N |
635 |
-- |
95 |
|
|
|
|
|
|
Pullus |
18-05-2023 |
5556406 |
G-7|P |
616 |
-- |
92,3 |
|
|
|
|
|
|
Pullus |
27-05-2023 |
5556405 |
G-7|N |
1030 |
-- |
-- |
|
|
|
|
|
|
|
|
|
|
|
PNED |
nest 136-2022 |
|
|
|
dam: |
dam 1 east |
|
|
|
location: |
Visible from N. |
|
|
|
breeders: |
cach x cach |
|
|
|
OBSERVATIONS: |
|
|
|
|
09-04-2023 |
adult: |
male unringed cach & female cach yPNED present at location. So search for nest today. |
26-04-2023 |
adult: |
male unringed cach & female cach yPNED present at location. |
|
nest: |
code 136, birds have moved to this location. "136" sprayed on block + blue foam. |
|
eggs: |
3x eggs, measured. |
A |
1 mm - float |
|
|
|
|
B |
1 mm - float |
|
|
|
|
C |
1 mm - float |
13-05-2023 |
adult: |
cach male. |
|
|
18-05-2023 |
pulli: |
2 chicks ringed, 3rd not found. |
|
27-05-2023 |
pulli: |
1 chick measured. |
18-06-2023 |
pulli: |
g-7|P & g-7|N present + unringed sibling. 3x fledged from PNED. |
|
adult: |
y-PNED present. Unringed male guarding g-7|P. |
25-06-2023 |
pulli: |
g-7|N alone, g-7|P with unringed sibling. |


|