Thorleif Schjelderup-Ebbe Explained

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.

Life and work

Thorleif Schjelderup-Ebbe the son of sculptors (1868–1941) and Menga Schjelderup (1871–1945). At the age of 19, in 1913, he described a pecking order of hens.[2] The findings were based on observing chickens at a farm during his summer holidays.[3] The dominance hierarchy of chickens and other birds that he studied led him to the observation that hens had an established social order determining who-dared-to-peck-whom in a fight. This order was, Schjelderup-Ebbe concluded, not necessarily dependent on the strength or age of the hens, and not necessarily a strict ranking as he even observed triangles of dominance. Schjelderup-Ebbe studied for a Ph.D. in Germany, tried to present his thesis in Oslo, but was rejected.[4]

Personal life

Schjelderup-Ebbe was married to Torbjørg Brekke. Their son was Dag Schjelderup-Ebbe, a musicologist, composer, music critic and biographer.

Publications

Further reading

External links

Notes and References

  1. http://snl.no/.nbl_biografi/Thorleif_Schjelderup-Ebbe/utdypning Thorleif Schjelderup-Ebbe – utdypning (Norsk biografisk leksikon)
  2. Hønsenes stemme. Bidrag til hønsenes psykologi, in: Naturen: populærvitenskapeling tidsskrift 37, 1913, 262–276
  3. J. Price, A Remembrance of Thorleif Schjelderup-Ebbe, Human Ethology Bulletin 10, 1995, 1-6.
  4. Price, 1995.