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From J. J. Weir   [1–13] May 1869

Summary

South Down sheep: variability in colouring and patterning of lambs compared with constancy of adult coat.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  [1–13] May 1869
Classmark:  DAR 181: 79
Letter no:  DCP-LETT-6723

To J. J. Weir   13 May [1869]

Summary

Comments on paper by JJW ["On insects and insectivorous birds", Trans. R. Entomol. Soc. Lond. (1869): 21–6]. JJW’s verification of A. R. Wallace’s suggestion regarding inheritance is quite a discovery.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  13 May [1869]
Classmark:  DAR 148: 321
Letter no:  DCP-LETT-6746

To J. J. Weir   20 May [1869]

Summary

Asks for information about male birds migrating before females.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  20 May [1869]
Classmark:  DAR 148: 322
Letter no:  DCP-LETT-6753

From J. J. Weir   26 May 1869

Summary

Migratory male nightingales and blackcaps arrive before females [see Descent 1: 259].

Discusses chaffinch "Peggers".

Disagrees with CD’s opinion that canary mules are fertile.

Display of colour of greenfinches in courtship.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  26 May 1869
Classmark:  DAR 86: A52a-c, DAR 84.1: 143
Letter no:  DCP-LETT-6758

To J. J. Weir   27 May [1869]

Summary

Thanks for information about bird migration.

Comments on canary hybridisation.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  27 May [1869]
Classmark:  DAR 148: 323
Letter no:  DCP-LETT-6759

From J. J. Weir   June 1869

Summary

Loss of juvenile colouring in South Down sheep.

Author:  John Jenner Weir
Addressee:  Charles Robert Darwin
Date:  June 1869
Classmark:  DAR 181: 80
Letter no:  DCP-LETT-6763

To J. J. Weir   1 July [1869]

Summary

"My health got so bad I could do nothing at Down".

Gives information about migration of male and female birds.

Author:  Charles Robert Darwin
Addressee:  John Jenner Weir
Date:  1 July [1869]
Classmark:  DAR 148: 324
Letter no:  DCP-LETT-6810
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