THE writers (6) have previously published an account of territorial fighting in the Great Crested Grebe (Podiceps c. cristatus) on Frensham Ponds, Surrey, between 1932 and 1934. On Great Pond (69! acres) six to seven pairs nested close together with no observed fighting apart from an occasional tussle in the immediate vicinity of a nest; but one further pair was aggressive not only against other G...
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