Adult and juvenile Caspian terns have been banded at several tern colonies throughout the Pacific Northwest in order to continue our efforts to measure survival, post-breeding dispersal, and movements among colonies. Each tern was banded with a federal numbered metal leg band and a unique combination of colored leg bands that allows for the identification of individual terns at a distance (i.e., at roosts or on colonies). This site was developed to allow observers an easy way to report resightings of color-banded Caspian terns. Once a resighting has been submitted, you will automatically receive a banding and resighting history for the individual tern having that color-band combination.

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