Image: Black-headed Gull - St James's Park, London - Nov 2006

Description: A Black-headed Gull in St James's Park, London, England. Although the gull typically has a black head, as the name suggests, its winter plumage around the head is white with black spots, visible on the side of the head. This image was taken by myself with a Canon 5D and 70-200mm f/2.8L lens at 150mm, ISO 1600 and f/8 with a 1/1250s shutter speed.
Title: Black-headed Gull - St James's Park, London - Nov 2006
Credit: Own work
Author: Diliff
Permission: Summary: In using this image or any subsequent derivatives of it, you are required to release the image under the same license. As such, any reproduction of this image, in any medium, must appear with a copy of, or full URL of the license.Attribution of this image to the author (DAVID ILIFF) is also required, preferably in a prominent location near the image.No other conditions may be added to, or removed from this license without the permission of the author and copyright holder. Suggested attribution: "Photo by DAVID ILIFF. License: CC-BY-SA 3.0" Please review the full license requirements carefully before using this image. If you would like to clarify the terms of the license or negotiate less restrictive commercial licensing outside of the bounds of GFDL/CC-BY-SA, please contact me by email, or if you don't have a Wikipedia account you can either leave a message on my talk page with your contact details and your request, or you can contact me on Facebook. Please also send a 'friend request' to ensure that I am aware of your message.
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes