Larus cachinnans
(last update:
Greg Neubauer
Marcin Przymencki
Albert de Jong
Mars Muusse
cachinnans plumages
Larus cachinnans XLDT 2CY-12CY, September 2014 - July 2024, Germany & the Netherlands. Picture: Eric Roeland, Armin Deutsch, Albert de Jong & Mars Muusse.
Green XLDT,
hatched and ringed in Germany, also in a mixed colony.
Breeder of "NEST 008-2020 & 008-2024" at colony Lelystad in the Netherlands.
Visits and data 2020:
| datum: | egg no: | width (mm) | length (mm) | volume (cm3): | water test on April 27th: | |
| 15-04-2020 | A | 50,8 | 74 | 96,15 | 90 - floating, 2mm above surface | 2 eggs in nest. |
| 15-04-2020 | B | 50,1 | 74,2 | 93,77 | 90 - floating, 1mm above surface | |
| 27-4-2020 | C | 50,7 | 71,6 | 92,67 | 90 - hafway in water | 3rd egg now as well in nest. |
| sum nest: | 282,59 | |||||
| 07-05-2020 | eggs | B-egg start to hatch. | ||||
| 21-05-2020 | -- | Nest unsuccessful. No left-overs, no shit, no chicks, no alarming parents. | ||||
| 02-06-2020 | -- | Nest empty, but parents still around. | ||||
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: | |
| XLDT 2024 | cach | cach | 73 | 49,9 | 91,52 | 76,3 | 49,7 | 94,89 | 76,7 | 51 | 100,45 | 286,86 | |
| # eggs | A-egg | hatch | # ringed chicks | # all chicks | # fledged chicks | comments | |||||||
| 3 | 25-4-2024 | 23-5-2024 | |||||||||||
| dam: | dam 1 west | ||||||||||||
| location: | Opposite the harbour | ||||||||||||
| parents? | g-XLDT & male cach | ||||||||||||
| ring pulli: | 28-May | ||||||||||||
| date | darvic | metal | location / nest# | species | sexe | age | wing | mass | head+ bill | bill | tarsus | gonys | greyscale |
| 14-05-2024 | g-C|K | .5631104 | nest XLDT | PONT | 1CY | 158 | |||||||
| 14-05-2024 | g-C|L | .5631105 | nest XLDT | PONT | 1CY | 126 | |||||||
| 14-05-2024 | g-C|M | .5631106 | nest XLDT | PONT | 1CY | 88 | |||||||
| OBSERVATIONS: | |||||||||||||
| 02-05-2024 | adults: | XLDT & male cachinnans at nest site, incubating male. Attempt to trap male, failed. | |||||||||||
| eggs: | 3x, measured. | ||||||||||||
| 14-05-2024 | chicks: | 3x ringed. Fish bolus (yellow) when processed. | |||||||||||
| food: | 14x fishes: among other Perch, Roach, Goby. | ||||||||||||
| 18-06-2024 | chicks: | 3x chicks present at dam. With unringed father & g-XLDT. | |||||||||||
Visits and data 2025:
OBSERVATIONS:
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| 3/16/2025 | nest | XLDT on bread, north of dam 1 west, not linked to nest location,
|
| 3/20/2025 | nest | XLDT not seen, r-F,L present with unringed partner at nest 2024 XLDT
|
| 3/21/2025 | nest | XLDT not seen, now r-C,G present with unringed partner at nest 2024 XLDT, Could very well be same unringed bird as 20-3-2025 (see black in bill)
|
| 4/23/2025 | nest | XLDT not present,
|
| 4/28/2025 | adult | XLDT is breeding at Marker Wadden (Maarten Hotting, pers comm),
|
below: Caspian Gull cachinnans XLDT 13CY, Match 16 2025, colony Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
.JPG)
below: Caspian Gull cachinnans XLDT 12CY, July 30 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst.
below: Caspian Gull cachinnans XLDT 12CY, July 19 2024, colony De Kreupel, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans XLDT 12CY, March 26 2024, Lelystad, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Caspian Gull cachinnans XLDT 11CY, July 15 2023, Lelystad colony, the Netherlands. Picture: Thijs Horst & Mars Muusse.
below: Larus cachinnans XLDT 11CY, April 04 2023, Lelystad, the Netherlands. Picture: Mars Muusse.
below: Larus cachinnans XLDT 11CY, February 24 2023, Almere, the Netherlands. Picture: Eric Roeland.
below: Larus cachinnans XLDT 9CY, February 04 2021, Almere, the Netherlands. Picture: Eric Roeland.
Spending winter at about 20 km's from the colony.
below: Larus cachinnans XLDT 8CY, April 15 2020, Lelystad, the Netherlands. Picture: Mars Muusse.
Breeding bird in the recently established colony near Lelystad, labelled "nest 08". Mixed colony of Lesser Black-backed Gull (dominance), Herring Gull, Caspian Gull, Yellow-legged Gull (few) and Spoonbill.
Birds breeding on islands, artificial breakwaters at the entrance of the harbour.
below: Larus cachinnans XLDT 8CY, March 26 2020, Lelystad, the Netherlands. Picture: Albert de Jong.
With partner, breeding at the exact same place as it did in season 2019.
below: Larus cachinnans XLDT 2CY, September 05 2014, Deponie Pohlsche Heide - Minden, Germany (52°23'05N, 08°46'45E). Picture: Armin Deutsch.
