Little Tern ( Sterna albifrons ) being colour ringed to determine its migration routes and fidelity to site by research worker .

---

Size: 5184px × 3456px
Photo credit: © David Woodfall / Alamy / Afripics
License: Licensed
Model Released: None

Keywords: albifrons, bird, british, conservation, migration, monitoring, nature, ornithology, research, ringing, scientific, sterna, tern, trust, working