Larus cachinnans

Larus cachinnans in the Netherlands

(last update: August 16, 2020)

Coordinator:
Albert de Jong
Merijn Loeve
Roland-Jan Buijs
Thijs Horst
Leon Kelder
Mars Muusse

Project Info
International trend
National trend
Site characteristics
Breeding biology
Fecundity
Food resources
Nonbreeding season
Breeding species
Hybrid scores
Ring codes
Future

Nests at De Kreupel 2020
nest r-02P4 20
nest y-X804 20
nest D01 20
nest D02 20
nest D03 20
nest L01 20
nest L02 20
nest L03 20
nest M02 20

Nests at De Kreupel 2021
nest r-02P4 20
nest w-201U 21
nest g-XLHD 21
nest r-KA 21
nest r-KB 21
nest r-KC 21
nest r-KD 21
nest r-KE 21
nest r-KF 21
nest r-KH 21
nest r-KJ 21
nest r-KK 21
nest A01 21
nest C03 21
nest C04 21
nest C06 21
nest D01 21
nest D03 21
nest D05 21
nest D06 21
nest D07 21
nest D08 21
nest E01 21
nest H01 21
nest L01 21
nest L02 21
nest L05 21
nest L06 21
nest L07 21
nest M01 21
nest M04 21
nest M06 21
nest Q01 21

**hybrid Herring Gull argenteus x Caspian Gull cachinnans 0.A adult, April 29 2022 & November 11 2022, De Kreupel, the Netherlands.**

You can participate in this project too! Please send in your observations of colour ringed birds to: ring@buijsecoconsult.nl

Bird from De Kreupel, nest C5 on island C. Data for this nest:

Date:	Egg code	Height (mm)	Width (mm)	Comments	Metal NLA	Colour ring	Wing (mm)	Head+ bill (mm)	Bill	Mass (gr)	Tarsus	Gonys	Swab no

14-4-2022	A-egg	72.7	51.8	2 eggs
	B-egg	74.1	52.8

29-4-2022				Adult trapped Caspian x Herring	6214033	Red 0.A	441	123.5	57.5	933	71.4	17.8	1064

13-5-2022				3 pulli in nest	5620234	Red 0.T		55.0		98
					5620235	Red 0.U		55.1		101
					5620236	Red 0.V		50.9		70

**below: Herring Gull argenteus x Caspian Gull cachinnans 0.A adult, November 11 2022, De Kreupel - Q, the Netherlands.** Picture: Leon Kelder.