Category Archives: Black-headed Gull

Chroicocephalus ridibundus

Black-headed Gull White ECM9 displaying courtship and territorial behaviour – 20170304

Return of the Black-headed Gull with an extra ‘foot’ – 20161211

Celebrating my 200th ringed Black-headed Gull and 1600 sightings in Leiden

1CY Black-headed Gull with an extra ‘foot’ – 20151226

1CY Black-headed Gull White EFJ5 – 20150625

Group effort: ring reading during sand suppletion activities at Scheveningen – 2015

Fierce Black-headed Gull fight – 20150412

2CY Black-headed Gull – 20150320

Return of pink Black-headed Gull to breeding colony – 20150306

Head moult progression in Black-headed Gull White 4FH, winter 2014/2015