tags: Great Blue Heron, Ardea herodias, birds, mystery bird, bird ID quiz
[Mystery bird] Great Blue Heron, Ardea herodias, photographed in California. [I will identify this bird for you in 48 hours]
Image: Steve Duncan [larger view]. 
Nikon D200 w/ Nikkor 300mm f/4 & TC17E. 
Please name at least one field mark that supports your identification. 
Review all mystery birds to date. 
