Larus cachinnans in the Netherlands
(last update: August 16, 2020)
Caspian Gull cachinnans F|Z 1CY, May, July & August 2020, Lelystad, the Netherlands. Picture: Merijn Loeve, Rene Oosterhuis & Eric Roeland.
Black bar tibia ring n[F|Z], ringed as pullus Larus cachinnans on May 21 2020 at nest 009 in colony Lelystad, the Netherlands.
ID uncertain, male is sub-adult Caspian Gull cachinnans, female is assumed hybrid female argenteus x cachinnans.
| datum: | egg no: | width (mm) | length (mm) | volume (cm3): | water test on April 27th: | |
| 15-04-2020 | A | 50,5 | 67,2 | 86,29 | 90 - floating, 3mm above surface | 2 eggs in nest. |
| 15-04-2020 | B | 50,6 | 71,9 | 92,69 | 90 - floating, 3mm above surface | |
| 27-4-2020 | C | 47,5 | 70,9 | 80,54 | 90 - hafway in water | 3rd egg now as well in nest. Female (hybrid?) at nest. |
| sum nest: | 259,52 | |||||
| 07-05-2020 | eggs | All eggs intact. | ||||
| 21-05-2020 | pullus | Nest empty, but 2 chicks near nest and ringed. Pullus n[F|Z]. | ||||
| 21-05-2020 | pullus | Nest empty, but 2 chicks near nest and ringed. Pullus n[F|0]. | ||||
Caspian Gull cachinnans F|Z 1CY, August 08 2020, Lelystad, the Netherlands. Picture: Eric Roeland.
Shouting to the wrong bird. Maybe it underestimated the size of that bill.
Covert and tertial pattern match Caspian Gull nicely.
Caspian Gull cachinnans F|Z 1CY, August 04 2020, Lelystad, the Netherlands. Picture: Eric Roeland.
After fledging.
below: Caspian Gull cachinnans F|Z 1CY, July 27 2020, Lelystad, the Netherlands. Picture: Rene Oosterhuis.
Juvenile plumage.
Caspian Gull cachinnans F|Z 1CY, July 26 2020, Lelystad, the Netherlands. Picture: Eric Roeland.
After fledging.
Caspian Gull cachinnans F|Z 1CY, May 21 2020, Lelystad, the Netherlands. Picture: Merijn Loeve.
