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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

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
Document type
letter (3)
Author
Weir, J. J.[X]
Addressee
Correspondent
Date
1868
05
04 (1)
18 (1)
30 (1)
letter