An adult Black-headed Gull (Chroicocephalus ridibundus) in winter plumage perched on a post over water.

- Image ID: KFMRNR

An adult Black-headed Gull (Chroicocephalus ridibundus) in winter plumage perched on a post over water.

Paul Young / Alamy Stock Photo

Image ID: KFMRNR

Location: RSPB Snettisham, Norfolk, UK