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From J. J. Weir   [before 3] March 1868

Summary

Aggressive behaviour of a bullfinch toward new arrival in JJW’s aviary.

Sexual differences in goldfinches: size of beaks.

Sexual selection in Lepidoptera.

Thinks Dr Alex Wallace’s observations on Bombyx not conclusive in proving that no preference is shown by females.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 3] Mar 1868
Classmark:  DAR 84.1: 51–2 and DAR 82: A107–8
Letter no:  DCP-LETT-5964

From J. J. Weir   [before 5] March 1868

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Summary

Does not think females give preference to any males. Coloration, pugnacity; cases of use of colour in struggle for existence. [see Descent 1: 395.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [before 5] Mar 1868
Classmark:  DAR 82: A109–12
Letter no:  DCP-LETT-5985

From J. J. Weir   7 March 1868

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Summary

Various facts about birds: pairing, finding new mates, protective coloration, polygamy, sexual differences.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  7 Mar 1868
Classmark:  DAR 86: A21–4
Letter no:  DCP-LETT-5995

From J. J. Weir   11 March 1868

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Summary

Courtship of goldfinches. Male display. [See Descent 2: 95.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  11 Mar 1868
Classmark:  DAR 84.1: 53–6
Letter no:  DCP-LETT-6005

From J. J. Weir   16 March 1868

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Summary

Sexual selection of pigeons, ducks;

polygamous birds.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  16 Mar 1868
Classmark:  DAR 84.1: 57–60
Letter no:  DCP-LETT-6016

From J. J. Weir   23 March 1868

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Summary

Relates a variety of facts about sexual selection in birds. [See Descent 2: 104–5.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  23 Mar 1868
Classmark:  DAR 84.1: 61–4
Letter no:  DCP-LETT-6041

From J. J. Weir   24 March 1868

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Summary

Experiments to test Wallace’s theory that brightly coloured caterpillars are rejected by birds. [See Descent 1: 417.]

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  24 Mar 1868
Classmark:  DAR 84.1: 65–8
Letter no:  DCP-LETT-6046

From J. J. Weir   [26] March 1868

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Summary

Proportions of sexes in birds as reported by bird-catchers.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [26] Mar 1868
Classmark:  DAR 86: C5–9
Letter no:  DCP-LETT-6056

From J. J. Weir   31 March 1868

Summary

Sexual behaviour of chaffinches.

Numbers of female linnets in September.

His experiments on brightly coloured larvae [as food], testing A. R. Wallace’s theory.

His observations of a rookery make him wonder whether it may not be more difficult than we think for birds to pair.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  31 Mar 1868
Classmark:  DAR 46.1: 98–101, DAR 84.1: 69–70
Letter no:  DCP-LETT-6074
Document type
letter (9)
Author
Weir, J. J.[X]
Addressee
Correspondent
Date
1868
03
03 (1)
05 (1)
07 (1)
11 (1)
16 (1)
23 (1)
24 (1)
26 (1)
31 (1)
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