Reginald Ernest Moreau, (29 May 1897 – 30 May 1970), was an English civil servant who worked as an accountant in Africa and later contributed to ornithology. He made studies of clutch size in nesting birds, compared the life-histories of birds in different latitudes and was a pioneer in the introduction of quantitative approaches to the study of birds. He was also a long time editor of the ornithological journal Ibis.[1]