Margaret Morse Nice

Margaret Morse Nice was an American ornithologist, ethologist, and child psychologist who made an extensive study of the life history of the song sparrow and was author of Studies in the Life History of the Song Sparrow (1937). She observed and recorded hierarchies in chickens about three decades ahead of Thorleif Schjelderup-Ebbe, who coined the term "pecking order". After her marriage, she made observations on language learning in her children and wrote numerous research papers.