Arnold Whitworth Boyd MC, MA, FZS, FRES, MBOU (20 January 1885 – 16 October 1959) was an ornithologist and naturalist from Altrincham, Cheshire, England. Boyd was born on 20 January 1885. He was a long-time contributor to The Guardian 's "Country Diary" column, taking over a slot from his friend Thomas Coward in 1933, on the latter's death. In 1950, he revised Coward's The Birds of the British Isles and their Eggs for a new edition. Boyd died in Northwich, Cheshire on 16 October 1959.