Caspian Tern is the world's largest tern and it also among the most naturally occurring cosmopolitan species of on the planet. We are interested in using crowd sourced photos and observational records of Caspian Terns in order to explore questions about their patterns of movement and distribution. All images and records are of interest, but we are especially interested photos of Caspian Terns that are carrying fish in their bill or photos of Caspian Terns in the company of other animal species. We especially prize photos or records of resighting Caspian Terns marked with bands, rings, or other types of field-readable tags.
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