Valkoposkihanhi

tags: Barnacle Goose, Valkoposkihanhi, Branta leucopsis, birds, mystery bird, bird ID quiz [Mystery bird] Barnacle Goose, known in Finnish as Valkoposkihanhi, Branta leucopsis, photographed on Suomenlinna, Helsinki, Finland. [I will identify this bird for you in 48 hours] Image: GrrlScientist, 16 May 2010 [larger view] Canon SX100 IS. Please name at least one field mark that supports your identification. I photographed this lovely mystery bird a couple days ago in stunning Helsinki, Finland, can you ID the species and tell me how it got its peculiar English common name? This goose was…