Thorleif Schjelderup-Ebbe
Norwegian zoologist / From Wikipedia, the free encyclopedia
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"Schjelderup-Ebbe" redirects here. For Thorleif's son, see Dag Schjelderup-Ebbe.
Thorleif Schjelderup-Ebbe (12 November 1894 in Kristiania – 8 June 1976 in Oslo)[1] was a Norwegian zoologist and comparative psychologist. He was the first person to describe a pecking order of hens.