Larus cachinnans in the Netherlands

(last update: August 16, 2020)

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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

Caspian Gull cachinnans F1 1CY, May 21 2020, De Kreupel, the Netherlands. Picture: Leon Kelder.

Bird hatched in nest K05 in season 2020. Brother / sister of p[F=]. Mother is Polish ringed r[02P4].

date:	egg no:	width (mm):	length (mm):	volume (cm3):			comments:
10-4-2020	--						Two adults, including female from Poland.
8-5-2020	C	50,2	72,4	132,49			2 pulli & 1 egg; pulli ringed.
			WING:	HEAD + BILL:	BILL:	WEIGHT:
8-5-2020	pullus	NLA 5.545.417 & p[F1]	--	51.1	19.9	75
8-5-2020	pullus	NLA 5.545.418	--	50.6	19.8	69	Too small for colour ring.
21-5-2020	pullus	NLA 5.545.417 & p[F1]	100.0	90.7	38.1	558
21-5-2020	pullus	NLA 5.545.418 & p[F=]	98.0	89.4	37.1	517	Colour ring added.
21-5-2020	pullus	NLA 5.545.432	83.5	85.7	36.0	440	New, probably C-chick.
12-6-2020	juvenile	NLA 5.545.418 & p[F=]					B-chick p[F=] is dead.
26-6-2020	juveniles	Two adults with two fledged juveniles.

Close-up of head shows a rather stubby bill with obvious gonys angle. Plumage doesn't reveal much details.