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David Lack

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David Lack

David Lack
Born David Lambert Lack
(1910-07-16)16 July 1910
Died 12 March 1973(1973-03-12) (aged 62)
Nationality British
Fields Ornithology
Known for Darwin's Finches, 1947
Notable awards Fellow of the Royal Society[1]

David Lambert Lack FRS,[1] (16 July 1910 – 12 March 1973) was a British evolutionary biologist who made contributions to ornithology, ecology and ethology.[2] His 1947 book, Darwin's Finches, on the finches of the Galapagos Islands was a landmark work.[3] He developed Lack's principle.

His pioneering life-history studies of the living bird helped to make ornithology respectable as a serious science. He became Director of the Edward Grey Institute of Field Ornithology at Oxford University.


  • Early life 1
  • Career 2
    • Darwin's finches 2.1
    • Religious beliefs 2.2
    • Career outline 2.3
  • Honours 3
  • Family 4
  • Major publications 5
    • Books 5.1
    • Selected papers 5.2
  • Sources 6
  • References 7

Early life

Lack was born in

  1. ^ a b c d e Thorpe, W. H. (1974). "David Lambert Lack 1910-1973".  
  2. ^ a b Anderson, Ted R. (2013). The Life of David Lack: Father of Evolutionary Ecology.  
  3. ^ Blake, Charles H. (1974). "Obituary" (PDF). The Auk 91 (1): 239.  
  4. ^ n.p. (2007). "Harry Lambert Lack, M.D., F.R.C.S". The Journal of Laryngology & Otology 58 (3): 135.  
  5. ^ "Public School Essay Competition", The Times, December 17, 1928; p. 12; Issue 45078; col C
  6. ^ Provine, William B (1986) Sewall Wright and evolutionary biology. Chicago. ISBN 0226684733 p. 406
  7. ^ Johnson, K. (2004). "The Ibis: Transformations in a Twentieth Century British Natural History Journal". Journal of the History of Biology 37 (3): 515–555.  
  8. ^ Ydenberg, R.C. and Bertram, D.F. (1989). "Lack's clutch size hypothesis and brood enlargement studies on colonial seabirds". Colonial Waterbirds 12 (1): 134–137.  
  9. ^ Steinheimer, F. D. (2004). "Charles Darwin?s bird collection and ornithological knowledge during the voyage of H.M.S. ?Beagle?, 1831?1836". Journal of Ornithology 145 (4): 300–320.  
  10. ^ Lack, David (1945). "The Galapagos finches (Geospizinae): a study in variation". Occasional Papers of the California Academy of Sciences 21: i–vii, 1–152. 
  11. ^ Lack, David 1947. Darwin's Finches. Cambridge University Press (reissued in 1961 by Harper, New York, with a new preface by Lack)
  12. ^ Grant, Peter R. 1999. Ecology and evolution of Darwin's finches. Princeton NJ.
  13. ^ MacArthur R. and Wilson E.O. 1967. The theory of island biogeography. Princeton 1967.
  14. ^ Mayr, Ernst (1985). The growth of biological thought: diversity, evolution, and inheritance. Harvard University Press. ISBN 0-674-36446-5, pp. 274–5.
  15. ^ Cain, A. J. and Provine, W. B. (1991) "Genes and ecology in history". In Berry, R. J. et al. (eds.) Genes in ecology: the 33rd Symposium of the British Ecological Society. Blackwell, Oxford. p. 9.
  16. ^ "The David Lack Centenary Symposium". The Edward Grey Institute of Field Ornithology. Retrieved 5 May 2010. 


  • Anderson, Ted R. (2013). The Life of David Lack: Father of Evolutionary Ecology.  


  • Lack, D. (1940). "Evolution of the Galapagos Finches". Nature 146 (3697): 324.  
  • Lack, David. 1942. Ecological features of the bird faunas of British small islands. Journal of Animal Ecology 11:9–36.
  • Lack, David. 1945. The Galapagos finches (Geospizinae): a study in variation. Occasional Papers of the California Academy of Sciences 21:i–vii, 1–152.
  • Lack, David. 1947-8. The significance of clutch-size. Ibis 89, 302–352; 90, 25–45.
  • Lack, David 1949. The significance of reproductive isolation. In Jepsen G, Mayr E and Simpson GG (eds) Genetics, paleontology and evolution. Princeton.
  • Lack, David. 1954. The evolution of reproductive rates. In Huxley J, Hardy AC and Ford EB (eds). Evolution as a process. Allen & Unwin, London.
  • Lack, David. 1967. Interrelationship in breeding adaptations as shown by marine birds. Proc. XIVth Int. Orn. Congr. Oxford 1966, p3–42.
  • Lack, David. 1973. The numbers of species of hummingbirds in the West Indies. Evolution 27:326–337.

Selected papers

  • Lack, David. 1943. The life of the Robin. Witherby, London.
  • Lack, David. 1947. Darwin's Finches. Cambridge University Press (reissued in 1961 by Harper, New York, with a new preface by Lack; reissued in 1983 by Cambridge University Press with an introduction and notes by Laurene M. Ratcliffe and Peter T. Boag). ISBN 0-521-25243-1
  • Lack, David. 1950. Robin Redbreast. Oxford. (A new edition of this book, revised and expanded by Lack's son Andrew, was published under the title Redbreast: the Robin in life and literature by SMH Books in 2008.)
  • Lack, David. 1954. The natural regulation of animal numbers. Oxford University Press, Oxford.
  • Lack, David. 1956. Swifts in a tower. Methuen, London.
  • Lack, David. 1957. Evolutionary theory and Christian belief: the unresolved conflict. Methuen, London.
  • Lack, David. 1965. Enjoying ornithology. Methuen, London.
  • Lack, David. 1966. Population studies of birds. Oxford University Press, Oxford.
  • Lack, David. 1968. Ecological adaptations for breeding in birds. Methuen, London.
  • Lack, David. 1971. Ecological isolation in birds. Harvard University Press, Cambridge, Mass. and Blackwell, Oxford.
  • Lack, David. 1974. Evolution illustrated by waterfowl. Harper & Row, London.
  • Lack, David. 1976. Island biology illustrated by the land birds of Jamaica. University of California Press, Berkeley. ISBN 0-520-03007-9 (posthumously).


Major publications

David Lack was married to Elizabeth Lack (née Silva) and they had four children: Peter (born 1952, a biologist), Andrew (born 1953, also a biologist and academic), Paul (born 1957, a freelance teacher), and Catherine (born 1959, a university chaplain).[2] In Oxford, the Lacks initially lived in a flat in Park Town, North Oxford, and later on Boars Hill, just south of Oxford.


The centenary of Lack's birth, 16 July 2010, was marked by a 'David Lack Centenary Symposium', hosted by the Edward Grey Institute. A programme of talks focused on and celebrated the scientific contributions of Lack to ornithology, and the broader fields of ecology and evolution, and assessed the development of these fields in the 21st century.[16]


The Common Swift.

Career outline

Arthur Cain remarked of him "David Lack was the only religious man I knew at that period who did not allow his religion to dictate his view of natural selection."[15]

Lack became a convert to Anglicanism, which led to his composition, in 1957, of a brief book, Evolutionary theory and Christian belief, on the relationship between Christian faith and evolutionary theory. This book foreshadows, in some ways, the non-overlapping magisteria conception of the relationship between religion and science later popularized by Stephen Jay Gould.

Religious beliefs

"The person who more than anyone else deserves credit for reviving an interest in the ecological significance of species was David Lack... It is now quite clear that the process of speciation is not completed by the acquisition of isolating mechanisms but requires also the acquisition of adaptations that permit co-existence with potential competitors." [14]

The second is the later book in which the differences in bill size are interpreted as adaptations to specific food niches, an interpretation that has since been abundantly confirmed.[11] This change of mind, according to Lack's Preface, came about as a result of his reflections on his own data whilst he was doing war work. The effect of this change in interpretation is to put the emphasis for speciation onto natural selection for appropriate food handling instead of seeing it primarily as a by-product of an isolating mechanism. In this way his work contributed to the modern evolutionary synthesis, in which natural selection came to be seen as the prime mover in evolution, and not random or mutational events. Lack's work laid the foundations for the much more extensive work of Peter Grant and his colleagues.[12] Also, Lack's work feeds into studies of island biogeography which continue the same range of issues presented by the Galapagos fauna on a more varied canvas.[13] According to Ernst Mayr,

Lack's most famous work is Darwin's Finches, a landmark study whose title linked Darwin's name with the Galapagos group of species and popularised the term "Darwin's finches" in 1947, though the term had been introduced by Percy Lowe in 1936.[9] There are two versions of this work, differing significantly in their conclusions. The first is a book-length monograph, written after his visit to the Galapagos, but not published until 1945.[10] In it Lack interprets the differences in bill size as species recognition signals, that is, as isolating mechanisms.

Darwin's finches

He wrote numerous papers in ornithological journals, and had a knack of choosing memorable titles: he once claimed to have single-handedly caused the renaming of a group of birds through the submission of a scientific paper, his 1935 publication, "Territory and polygamy in a bishop bird, Euplectes hordeacea hordeacea (Linn.)" in the journal Ibis. Birds in the genus Euplectes are referred to simply as bishops, but the journal editor felt that with that form the title might cause misunderstanding.

Lack's work in ornithology was almost entirely based on studies of the living bird. He was one of the pioneers of life-history studies in Britain, especially those based on quantitative approaches, when some traditional ornithologists of the time were focussing their studies on morphology and geographic distribution.[7] Lack's major scientific research included work on population biology and density dependent regulation. His work suggested that natural selection favoured clutch sizes that ensured the greatest number of surviving young. This interpretation was however debated by V.C. Wynne-Edwards who suggested that clutch size was density-independent. This was one of the earliest debates on group selection. Lack's studies were based on nidicolous birds and some recent studies have suggested that his findings may not hold for other groups such as seabirds.[8]

During World War II Lack served in the British Army working on radar research. After hostilities ended he was made Director of the Edward Grey Institute of Field Ornithology at Oxford University (1945–1973). His wartime experience enabled him to make radar observations of bird migration.

After Cambridge, he became a schoolmaster at Dartington Hall School, Devonshire until Summer 1938 when he took a year off to study bird behaviour on the Galapagos Islands. He was only in the Galapagos for part of that year, starting August 1938. April to August 1939 was spent at the California Academy of Sciences and at Ernst Mayr's home in New Jersey. He returned home in September 1939, after the outbreak of war.[6]


Until the age of fifteen, Lack lived in a large house in Devonshire Place, London. By the age of nine, he had learnt the names of most birds and had written out an alphabetically arranged life-list.[1] In 1928, with an essay on 'My favourite birds' he was the national winner of the senior prize (a silver medal) in the Public School Essay Competition, organized by the Royal Society for the Protection of Birds.[5]


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