Darwin on sexual selection in birds, 1871

Numéro d’image : 12642888
Darwin on sexual selection in birds, 1871
Darwin on sexual selection in birds, 19th-century illustration. Here, Darwin is discussing the appearance of a male peacock's feathers. Sexual selection is a form of evolutionary and reproductive selection based on differences between the sexes. This is page 137 on 'Gradation of Characters' in chapter 14 (one of several chapters on secondary sexual characteristics of birds) in volume two of 'The Descent of Man and Selection in Relation to Sex' (1871) by British naturalist Charles Darwin (1809-1882). In volume two of this work ('Sexual Selection'), Darwin wrote on aspects of his evolutionary theory, including sexual selection and natural selection. Darwin's most famous work, 'On the Origin of Species', had been published in 1859 and had caused a storm of controversy with Christian orthodoxy. By the time of this later work, Darwin's theories were more widely accepted.
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Crédit: Science Photo Library / Library of Congress, Rare Book and Special Collections Division
Taille de l’image : 2514 px × 3477 px
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