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Leg bands for swans were made of laminated polyvinyl chloride (PVC) with individual letter and number codes engraved on them to give individual recognition in the field. The details of design and manufacture are described. Over 1,000 mute swans (Cygnus olor) and 270 Bewick's swans (C. columbianus bewickii) have been marked with such bands in England since November 1967. Additionally, 1,400 bands were supplied for use on whistling swans (C. c. columbianus) in North America. Banded Bewick's swans have been identified in many localities including the Netherlands, Denmark, and Germany. Forty-one of 50 banded young mute swans were readily identified out of a flock of 450 birds the year after banding. Further developments as neck collars for swans or as leg bands for geese are possible.
The Journal of Wildlife Management © 1972 Wiley