Blue Mountain Vireo

tags: Blue Mountain Vireo, Vireo osburni, birds, mystery bird, bird ID quiz [Mystery birds] Blue Mountain Vireo, Vireo osburni, photographed at Portland Gap, Blue Mountains, Jamaica. [I will identify this bird for you tomorrow] Image: Paul Jones, 18 March 2009 [larger view]. Canon 30-D, 300f4 lens, 1/250 at f4, 320 ISO. Please name at least one field mark that supports your identification. Review all mystery birds to date.