Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
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Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future
Nests at Lelystad 2022
nest y-PNED
nest y-PHSV / r-CG
nest y-P:U60
nest y-X56A
nest y-X71A
nest y-X540
nest y-XCHP
nest w-327:U
nest n-F|N
nest r-6A
nest r-6B
nest r-6C
nest r-CS
nest r-FC
nest w-8Z
nest zy-MT
nest 003
nest 011
nest 012
nest 014
nest 015
nest 017
nest 017B
nest 018
nest 019
nest 021
nest 026
nest 034
nest 035
nest 038
nest 040
nest 044
nest 046
nest 048
nest 053
nest 055
nest 058
nest 060
nest 061Z
nest 062
nest 063
nest 107Z
nest 109
nest 111
nest 112
nest 113
nest 117Z
nest 118Z
nest 123Z
nest 124Z
nest 125Z
nest 126Z
nest 127Z
nest 128Z
nest 129Z
nest 131Z
nest 132 YLG
nest 133
nest 134
nest 135
nest 136
nest 137
nest 138
nest 139
nest 143Z
nest 203
nest 204
nest 207
nest 222Z
nest 227
nest 228Z
nest 229
nest 230Z
nest 231
nest 240Z
nest 244
nest 245Z
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-6.B
nest r-7.P
nest r-C.G
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 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 |
Cachinnans - nest Lelystad r-C.S (108)
General remarks:
- Eggs: Volume measured by Stonehouse (1964) and Spaans & Spaans (1975), which make comparison possible with data from Texel (Camphuysen pers comm 16.04.2020).
- In 2022 nest s108 positioned on dam 1 at T split; 10 meters from nest 21.
- ID certain in 2022: both immature (4CY) cachinnans, one trapped at the nest and ringed r[C.S].
- ID certain in 2023: both are cachinnans, but partner 1 is not r[C.S].
- ID certain in 2024: both are same cachinnans: partner 1 is r[C.S] again, male is now 6CY cachinnans.
location |
April 27th, 2022: location of nest. |
April 15th, 2022: location of nest. |
April 26th, 2023: 3 eggs. |
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April 12th, 2024: 2 eggs. |
April 21st, 2024: 3 eggs clutch. |
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nest |
April 15th, 2022: 1 egg. |
April 9th, 2023: 2 eggs. |
April 26th, 2023: 3 eggs. |
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April 12th, 2024: 2 eggs. |
April 21st, 2024: 3 eggs clutch. |
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partner 1 |
May 9th, 2022 4CY cachinnans r-C.S. |
May 9th, 2022 4CY cachinnans r-C.S. |
May 9th, 2022 4CY cachinnans r-C.S. |
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March 08 2024: r-CS. |
March 19 2024: r-CS & male partner. |
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partner 2 |
May 4th, 2022 4CY cachinnans. |
May 4th, 2022 4CY cachinnans. |
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partner 2 |
April 27th, 2023: 5CY male cachinnans. |
April 27th, 2023: 5CY male cachinnans. |
April 27th, 2023: 5CY male cachinnans. |
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partner 2 |
April 23rd, 2024: 6CY male cachinnans. |
April 23rd, 2024: 6CY male cachinnans. |
April 23rd, 2024: 6CY male cachinnans. |
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partner 2 |
April 23rd, 2024: 6CY male cachinnans. |
April 23rd, 2024: 6CY male cachinnans. |
April 23rd, 2024: 6CY male cachinnans. |
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pullus |
May 17th, 2022 pullus r[5.G]. |
May 17th, 2022 pullus r[5.H]. |
June 18th, 2023: juvenile r[8.P] & r[8.4]. |
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pullus |
May 11th, 2023: pullus r[8.V]. |
July 8th, 2023: pullus r[8.P]. |
July 8th, 2023: pullus r[8.4]. |
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pullus |
June 4th, 2024: pullus g-C|S. |
June 4th, 2024: pullus g-C|A. |
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prey |
May 17th, 2022 prey is Eel (50 cm). |
May 17th, 2022 prey is Roach (in mm). |
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Visits and data 2022:
Estimation egg laying: A-egg = April 15 2022. Estimating hatching = May 13 2022.
date: |
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11-04-2022 |
nest ready. Still empty. |
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12-04-2022 |
2 birds at nest site. |
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egg no: |
width (mm): |
length (mm): |
volume (cm3): |
water test |
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15-04-2022 |
A |
48,1 |
70,9 |
-- |
-- |
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27-04-2022 |
A |
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float - 1 mm |
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27-04-2022 |
B |
67,9 |
47,7 |
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80 - tip on bottom |
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sum nest: |
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04-05-2022 |
4CY at nest. |
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09-05-2022 |
4CY trapped at nest. Ring metal = NLA 5.625.067. |
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darvic |
gonys |
wing |
tarsus |
head+bill |
bill |
mass |
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r[C.S] |
18,0 |
446 |
69,2 |
127,2 |
59,1 |
1025 gr. |
17-05-2022 |
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metal |
darvic |
mass |
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pullus |
NLA 5.625.106 |
r[5.G] |
151 |
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pullus |
NLA 5.625.107 |
r[5.H] |
89 |
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prey |
Roach & Eel (50 cm). |
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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 |
nest 108 |
74 |
49,7 |
92,03 |
68,2 |
49,8 |
85,16 |
69,7 |
48,6 |
82,89 |
260,08 |
same as 2022 |
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ring pulli: 12-mei |
laying A egg: 7-april |
hatch A egg: 5-mei |
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catch: |
date: |
metal: |
darvic: |
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pull |
11-05-2023 |
NLA 5.556.472 |
r 8.P |
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pull |
11-05-2023 |
NLA 5.556.473 |
r 8.V |
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pull |
11-05-2023 |
NLA 5.556.474 |
r 8.4 |
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pull |
18-06-2023 |
NLA 5.556.472 |
r-8.P |
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pull |
18-06-2023 |
NLA 5.556.474 |
r-8.4 |
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nest 108 |
dam: |
dam 1 T-split |
location: |
on W-part, border bitumen - blocks. Top of dam. Coded. Exact spot as in 2022, then r[C.S] (which was at almere dump + partner, on 23/4). |
breeders: |
cach x cach |
OBSERVATIONS: |
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09-04-2023 |
nest: |
2 eggs measured. No watertest. |
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adult: |
1x cachinnans unringed. Still not sure if r-CS is partner this season. |
26-04-2023 |
adult: |
legs not visible. |
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nest: |
1,5 m NW is another nest, 2 eggs. LBBG? (on 27/4: yes, this is LBBG). |
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eggs: |
3x egg, measured. No water test, ringing date known. |
27-04-2023 |
adult: |
5CY male cach. Unringed. |
11-05-2023 |
pulli: |
3 chicks ringed. |
13-05-2023 |
adult |
partner 1 present. |
18-06-2023 |
pulli: |
r-8P and r-84 present. Large chicks. 2x juveniles fledged. |
25-06-2023 |
pulli: |
r-8P present, other ring unreadable, probably r-8.4. |
Visits and data 2024.
NEST code |
parent 1 |
parent 2 |
A_length |
A_width |
A_volume |
B_length |
B_width |
B_volume |
C_length |
C_width |
C_volume |
TOTAL NEST: |
r-C.S 2024 |
cach |
cach |
74,6 |
50,1 |
94,28 |
72,1 |
49,8 |
90,03 |
71,1 |
50,3 |
90,57 |
274,88 |
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# eggs |
A-egg |
hatch |
# ringed chicks |
# all chicks |
# fledged chicks |
comments |
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3 |
10-4-2024 |
6-5-2024 |
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dam: |
dam 1 T-split |
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location: |
Like 2023: on W-part, border bitumen - blocks. Visible from north side. Moved 2 mtr north, compared to 2023. |
parents? |
R-CS is back, and with partner 2022? |
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ring pulli: |
11-May |
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date |
darvic |
metal |
location / nest# |
species |
sexe |
age |
wing |
mass |
head+ bill |
bill |
tarsus |
gonys |
greyscale |
14-05-2024 |
g-C|S |
.5631197 |
nest r-CS / 108 |
PONT |
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1CY |
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252 |
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14-05-2024 |
g-C|A |
.5631198 |
nest r-CS / 108 |
PONT |
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1CY |
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183 |
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04-06-2024 |
g-C|S |
.5631197 |
nest r-CS / 108 |
PONT |
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1CY |
235 |
610 |
103,9 |
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04-06-2024 |
g-C|A |
.5631198 |
nest r-CS / 108 |
PONT |
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1CY |
221 |
778 |
105,7 |
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OBSERVATIONS: |
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12-04-2024 |
eggs: |
2 eggs, measured. |
21-04-2024 |
eggs: |
3 eggs, measured. |
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nest: |
orange safety ring added |
23-04-2024 |
adults: |
present are r-CS and brutal male partner cachinnans with yellow legs. |
07-05-2024 |
eggs: |
1x hatching. |
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chicks: |
2x wet chicks, not ringed. |
14-05-2024 |
chicks: |
2x ringed, 3rd chick not found. |
04-06-2024 |
chick: |
g-C|A & g-C|S present. measured. |
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