Aggressive behaviour of Barrow's Goldeneye with young.-- Although Barrow's Goldeneye (Bucephala islandica) does not figure on the British and Irish list, the following notes may be of interest as an instance of an aggressive attitude during the breeding season. From 8th to 14th July 1957, W. J. C. Conn, A. T. Macmillan and I were in camp by a small pool (measuring roughly 200X75 yards) on the east s...

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