Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse
Caspian Gull cachinnans 5.X 1CY-3CY, May 2022 - February 2024, the Netherlands. Picture: Hans van Muiswinkel, Thijs Horst & Mars Muusse.
Red tibia ring r[5.X] and metal NLA 5.625.122, ringed as pullus Larus cachinnans at nest 112 on May 17 2022 in colony Lelystad, the Netherlands. Ringer: Albert de Jong / Herman Bouman.
ID certain, parents are male Caspian Gull type (short tongue on P10 may indicate hybrid, otherwise nice cachinnans) and female Caspian Gull.
Recoveries:
07-08-2022 Lelystad (Oostvaardersdijk), Flevoland, NL 5.228,00 N 519,00 E colourring read Thijs Horst
14-10-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
17-10-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
28-10-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
09-11-2022 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
06-01-2023 Oss (Vuiloverslag), Noord-Brabant, NL 5.147,00 N 532,00 E colourring read Tim Raats
01-02-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
09-02-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
16-02-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
01-03-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
01-04-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Jan Zorgdrager
27-04-2023 Bunschoten (Laakse Duiker), Utrecht, NL 5.214,00 N 524,00 E colourring read Erik Verboom
02-05-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
04-05-2023 Almere (De Vaart), Flevoland, NL 5.224,00 N 514,00 E colourring read Thijs Horst
09-08-2023 Bunschoten-Spakenburg (Visverwerker), Utrecht, NL 5.215,00 N 523,00 E colourring read Hans van Muiswinkel
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. | ||||||
below: Caspian Gull cachinnans 5.X 3CY, February 29 2024, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.
below: Caspian Gull cachinnans 5.X 2CY, February 01 2023, Bunschoten-Spakenburg, the Netherlands. Picture: Hans van Muiswinkel.
below: Caspian Gull cachinnans 5.X 1CY, August 07 2022, Almere, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans 5.X 1CY, May 17 2022, Lelystad, the Netherlands. Picture: Mars Muusse.
r[5.X] cachinnans from nest 112. Picture: May 17th, 2022.
Fledged. Sibling r[5.W] and sibling r[C.F] also fledged: 3 out of 3.
