Reversion of tamed animals to wild behaviour.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Reversion of tamed animals to wild behaviour.
Proportion of sexes in ruffs [see Descent 1: 306].
Colour display in linnets, songbirds. Courtship display of Australian pigeon at zoo.
Thanks JJW for his great assistance.
Discusses sexual selection in birds.
Sends queries on secondary sexual characteristics of birds.
Has often marvelled at the different growth of the flowering and creeping branches of ivy.
Answers CD’s question on whether any female birds regularly sing.
Glad to have JJW’s opinion on nest-building. Wallace’s view [that skill is learned] is opposed to many facts.
Asks JJW about birds and their behaviour.
Wants information on the first plumage of different breeds of canaries.
CD cannot remember whether correspondent believed the wing that Gallus bankiva opens and scrapes before the female, is ornamented. He fears it is not.