Terns

species: 
Caspian Tern
scientific name: 
Hydroprogne caspia
notes: 

Combination of a c-ring and a coded c-ring.

note 1 : a partnership between Oregon State University, Real Time Research,
and the USGS - Oregon Cooperative Fish and Wildlife Research Unit.

colour-ring type: 
Legrings : combination of one coded and uncoded rings.
countries where ringed: 
USA.
Images: