Peter J. Grant
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Peter James Grant (1943 - April 16, 1990) was a British ornithologist.
He co-wrote, with Killian Mullarney, the booklet "The New Approach to Identification".
He wrote and revised "Gulls, an identification guide".
With Lars Svensson, He was a co-author of the Collins Bird Guide, published after his death.
He was chair of the British Birds Rarities Committee from 1976 to 1986.