1956, a female Mallard (Anas platyrhynchos) wearing a British Museum ring (941642) was recaptured in the decoy a t Slimbridge, Gloucestershire. She was accompanied by four ducklings, estimated to be four or five days old. This female was marked at Slimbridge on 4th September 1956, when Mr. Peter Scott, who caught the bird, recorded it as a juvenile female. In deciding its age, he used the presence...

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