Research worker blowing on sternum of Little Tern (Sterna albifrons ) to determine gender , as part of process to ring bird at conservation project for species

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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