Opisthocomus hoazin

tags: Hoatzin, Opisthocomus hoazin, birds, mystery bird, bird ID quiz [Mystery bird] Hoatzin, Opisthocomus hoazin, photographed in South America [I will identify this bird for you tomorrow] Image: Indonesian Parrot Project [larger view]. Please name at least one field mark that supports your identification. Rick Wright, Managing Director of WINGS Birding Tours Worldwide, writes: Are these real birds? As anyone who has enjoyed a slow cruise along a South American river will attest, they are real -- so real that they have been made the national bird of Guyana. The mangrove thicket…