Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans F|T 1CY-5CY, 2020-2024, Lelystad, the Netherlands. Picture: Merijn Loeve, Mars Muusse & Thijs Horst.
Black bar tibia ring n[F|T] and metal NLA 5.552.905, ringed as pullus Larus cachinnans on May 21 2020 at nest 003 in colony Lelystad, the Netherlands (5230.00 N 525.00 E) - ringer Roland-Jan Buijs.
ID certain, both parents are Caspian Gull cachinnans.
Recoveries:
24-03-2023 Rotstergaast (Oosterschar). Friesland, NL 5.254,00 N 552,00 E colourring read Dick Kuipers
26-03-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst & Mars Muusse
05-04-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst & Mars Muusse
26-04-2023 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
08-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
19-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
20-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
25-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read Thijs Horst
26-03-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
08-04-2024 Lelystad (Bataviahaven), Flevoland, NL 5.230,00 N 525,00 E colourring read T. Horst & M. Muusse
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: | |
| n-F|T & g-A|A | cach | cach | 69,3 | 51 | 90,76 | 69,3 | 48,9 | 83,44 | 68,5 | 50 | 86,22 | 260,42 | |
| 2024 | # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | ||||||
| 3 | 15-4-2024 | 13-5-2024 | |||||||||||
| dam: | dam 1 east | ||||||||||||
| location: | Location was 25-2022/2023, near PNED, on N side dam, with furious birds. Sprayed '#'. | ||||||||||||
| parents? | 2023 prospecting n-F|T. | ||||||||||||
| ring pulli: | 18-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 23-04-2024 | g-A|A | .5625288 | nest n-F|T dam 1 | PONT | F | >4CY | 441 | 124,5 | 54,7 | 70,0 | 18,9 | 6 | |
| 14-05-2024 | .5631182 | nest n-F|T / g-A|A | PONT | 1CY | 74 | ||||||||
| 14-05-2024 | .5631183 | nest n-F|T / g-A|A | PONT | 1CY | 62 | ||||||||
| 31-05-2024 | g-C|6 | .5631183 | nest n-F|T / g-A|A | PONT | 1CY | Colour ring added. | |||||||
| OBSERVATIONS: | |||||||||||||
| 08-03-2024 | adult: | n-F|T on bread. | |||||||||||
| 21-04-2024 | eggs: | 3 eggs, measured. | |||||||||||
| adults: | 5CY & adult | ||||||||||||
| 23-04-2024 | adult | partner trapped at nest, nog g-A|A. | |||||||||||
| 14-05-2024 | chicks: | 2x ringed, only metal. Chicks 1 day old. Prognose was exact. | |||||||||||
below: Caspian Gull cachinnans F|T 5CY, March 26 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans F|T 5CY, March 20 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans F|T 5CY, March 19 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans F|T 5CY, March 08 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
This year maybe breeding in Lelystad colony.
below: Caspian Gull cachinnans F|T 4CY, April 05 2023, Lelystad, the Netherlands. Picture: Thijs Horst.
This year prospecting Lelystad colony.
below: Caspian Gull cachinnans F|T 4CY, April 04 2023, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
below: Caspian Gull cachinnans F|T 4CY, March 26 2023, Lelystad, the Netherlands. Picture: Mars Muusse & Thijs Horst.
below: Caspian Gull cachinnans F|T 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.
Data and visits to the nest:
| date: | egg no: | width (mm) | length (mm) | volume (cm3): | water test on April 27th: | laying date: | |
| 15-4-2020 | A | 50,3 | 72,3 | 92,10 | 90 - floating, 4mm above surface | ||
| 27-4-2020 | B | 50,1 | 71,5 | 90,36 | 90 - hafway in water | Both parents have cachinnans wing pattern. | |
| 27-4-2020 | C | 47,9 | 70,3 | 81,21 | 90 - tip at bottom | ||
| sum nest: | 263,68 | ||||||
| 21-5-2020 | pulli | Empty nest, 3 chicks near nest, ringed n[F|R], n[F|S], n[F|T]. | |||||
