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Coordinator: Albert de Jong Merijn Loeve Roland-Jan Buijs Thijs Horst Leon Kelder Mars Muusse |
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location | April 27th, 2022: nest location. | April 27th, 2022: 3 eggs. | April 26th, 2023: 3 eggs. |
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location | April 26th, 2023: 3 eggs. | April 12th, 2024: 1 egg. | April 21st, 2024: full clutch, with 3 eggs. |
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partner 1 | May 1st, 2022: partner 1 is cachinnans. | May 13th, 2023: female is cachinnans 'thayeri'. | May 13th, 2023: female is cachinnans 'thayeri'. |
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partner 1 | April 30th, 2024: female cachinnans 'thayeri'. | April 30th, 2024: female cachinnans 'thayeri'. | April 30th, 2024: female cachinnans 'thayeri'. |
partner 2 | April 27th, 2022: partner 2 is cachinnans type. | April 27th, 2022: partner 2 is cachinnans type. | May 4th, 2022: partner 2 is cachinnans type. |
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partner 2 | April 26th, 2023: male cachinnans type. | May 13th, 2023: male cachinnans type with partner. | April 21st, 2024: male cachinnans type. |
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partner 2 | April 21st, 2024: male cachinnans type. | April 21st, 2024: male cachinnans type. | . |
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pullus | May 9th, 2022: pullus r[C.F]. | May 17th, 2022: pullus r[5.W]. | May 17th, 2022: pullus r[5.X]. |
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pullus | July 18th, 2023: juvenile g[7|R]. | July 8th, 2023: juvenile g[7|S]. | October 10th, 2023: juvenile g[8|Z]. |
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pullus | May 14 2024: g-B|5. | May 14 2024: g-B|6. | . |
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Visits and data 2022 for nest 112:
Estimation egg laying: A-egg = April 3 2022. Estimating hatching = May 1 2022.
date: | |||||||
12-04-2022 | adult near nest. | ||||||
egg no: | width (mm): | length (mm): | volume (cm3): | ||||
15-04-2022 | A | 50,5 | 72,5 | -- | 50 - tip bottom | 3 eggs | |
B | 48,3 | 64,9 | -- | 70 - tip bottom | |||
C | 51 | 71,7 | -- | 90 - 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 | Cach and hybrid type at nest. | ||||||
04-05-2022 | Cach at nest. | ||||||
metal | darvic | mass | H+B | ||||
09-05-2022 | .5625057 | r-C.F | -- | -- | |||
17-05-2022 | .5625121 | r-5W | 515 | 85,9 | |||
17-05-2022 | .5625122 | r-5X | 618 | 94,9 | |||
17-06-2022 | No activity. | ||||||
21-06-2022 | No activity. | ||||||
28-06-2022 | r-CF 7 r-5W pictures. All chicks fledged: 3 out of 3. | ||||||
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 | 112-2023 | 74,6 | 51,7 | 100,40 | 74,2 | 51 | 97,17 | 71,2 | 50,2 | 90,34 | 287,91 | same as 2022 |
ring pulli: May 09. | laying A egg: April 06. | hatch A egg: May 04. | ||||||||||
catch: | date: | metal: | darvic: | mass: | wing: | head+bill: | ||||||
Pullus | 18-5-2023 | 5556407 | G-7|R | 123 | 59,6 | |||||||
Pullus | 18-5-2023 | 5556408 | G-7|S | 84 | 53 | |||||||
Pullus | 27-5-2023 | 5.556.407 | g-7|R | 382 | ||||||||
Pullus | 27-5-2023 | 5.625.270 | G-8|Z | 538 |
112-2023 | |||||||
dam: | dam 1 east | ||||||
location: | Top of dam. On S-side: red/white traffic sign, nest 111 is just west of it. Same nest as 111-2022 | ||||||
breeders: | cach x cach | ||||||
OBSERVATIONS: | |||||||
09-4-2023 | adult: | Unringed cach present at location. So search for nest today. | |||||
26-4-2023 | adult: | Unringed cach present at location. | |||||
nest: | Almost within Elder (vliertje), old red spot visible. Yellow/black flag in Elder. Top of dam, 25 m W of 19. | ||||||
eggs: | 3x egg, measured. | A | 90 - tip bottom | ||||
B | 90 - tip bottom | ||||||
C | 80 - tip bottom | ||||||
11-5-2023 | eggs: | 3 eggs | |||||
13-5-2023 | adult: | female = cach thayeri. Male is Caspian too. | |||||
18-5-2023 | pulli: | 2 chicks ringed, 3rd not found | |||||
27-5-2023 | pulli: | 3rd chick ringed today, near waterfront at S-side. | |||||
18-6-2023 | pulli: | g-7|S at waterfront. | |||||
25-6-2023 | adult: | thayeri and all 3 chicks present, 3x fledged. |
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: | |
cach | cach | 71,2 | 52,4 | 98,43 | 73,8 | 52 | 100,48 | 73,8 | 52,6 | 102,81 | 301,72 | ||
112-2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
3 | 11-4-2024 | 7-5-2024 | |||||||||||
dam: | dam 1 east | ||||||||||||
location: | Near waterfront on south side. Red/white traffic sign, nest 112 is just east of it. | ||||||||||||
parents? | same as 2023? | ||||||||||||
ring pulli: | 11-May | ||||||||||||
date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
14-05-2024 | g-B|5 | .5631186 | nest 112 | PONT | 1CY | 147 | |||||||
14-05-2024 | g-B|6 | .5631187 | nest 112 | PONT | 1CY | 111 | |||||||
OBSERVATIONS: | |||||||||||||
12-04-2024 | eggs: | 1 egg, measured. | |||||||||||
21-04-2024 | adult: | thayeri is one cach, male is cach-type (slightly broad medial band P10). | |||||||||||
21-04-2024 | eggs: | 3 eggs, not measured. | |||||||||||
07-05-2024 | eggs: | 3x. | |||||||||||
14-05-2024 | chicks: | 2x ringed. | |||||||||||
eggs: | 1x in nest, warm, and no cracks. | ||||||||||||
food: | little Perches (baarsjes). | ||||||||||||
04-06-2024 | nest: | No chick found. Nest failed. New nest started 2 mtr westwards, already with 2 eggs. Eggs measured. | |||||||||||
Blue egg: 70,1 x 50,4 | |||||||||||||
Brown egg: 74,0 x 50,7 | |||||||||||||