RAPPE M (1960) Short contributions: New data on the behaviour of Mallards Anas platyrhynchos alighting on the ice.. LIMOSA 33 (1): 52-52.

Mallard Anas platyrhynchos Some further data are given of gliding and tumbling of Mallards while alighting on the ice, this time observed in Belgium. See also Limosa 32, p. 220.

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