Larus ridibundus
grrlscientist | September 18, 2009tags: Black-headed Gull, Larus ridibundus, birds, mystery bird, bird ID quiz
[Mystery bird] Black-headed gull, Larus ridibundus, photographed on Seurasaari, Helsinki, Finland. [I will identify this bird for you in 48 hours]
Image: GrrlScientist, 4 July 2009 [larger view]
Photographed with Canon SX100 IS: exposure time: 1/400, F-value: 4.3, ISO: 80, Focal length: 60mm.
Please name at least one field mark that supports your identification.
Review all mystery birds to date.