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From J. J. Weir   [before 30 May 1868]

Summary

Reversion of tamed animals to wild behaviour.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 30 May 1868]
Classmark:  DAR 181: 73
Letter no:  DCP-LETT-5748

From J. J. Weir   [4–7] May 1868

Summary

Proportion of sexes in ruffs [see Descent 1: 306].

Colour display in linnets, songbirds. Courtship display of Australian pigeon at zoo.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [4–7] May 1868
Classmark:  DAR 84.1: 75–6, DAR 86: C3–4
Letter no:  DCP-LETT-6151

To J. J. Weir   7 May [1868]

Summary

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.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  7 May [1868]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-6165

From J. J. Weir   18 May 1868

Summary

Answers CD’s question on whether any female birds regularly sing.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  18 May 1868
Classmark:  DAR 84.1: 81–2, DAR 86: A37–8
Letter no:  DCP-LETT-6181

To J. J. Weir   30 May [1868]

Summary

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.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  30 May [1868]
Classmark:  University of Chicago Library, Special Collections Research Center (Joseph Halle Schaffner collection box 1, folder 2)
Letter no:  DCP-LETT-6215

To J. J. Weir   [before 18 May 1868]

Summary

CD cannot remember whether correspondent believed the wing that Gallus bankiva opens and scrapes before the female, is ornamented. He fears it is not.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  [before 18 May 1868]
Classmark:  American Philosophical Society (Mss.B.D25.)
Letter no:  DCP-LETT-6537
Document type
letter (6)
Author
Addressee
Correspondent
Darwin, C. R. (6)
Weir, J. J.[X]
Date
1868
05
04 (1)
07 (1)
18 (2)
30 (2)
letter