String with yellow colored bird rings used to mark Black Terns

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Size: 5112px × 3410px
Location: Alblasserdam, South-Holland, Netherlands
Photo credit: © Roel Meijer / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: band, banding, bird, color, colored, colour, coloured, dutch, holland, horizontal, mark, migration, ring, ringing, studies, study, yellow