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DCP-LETT-6723

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
[1–13] May 1869
Source of text:
DAR 181: 79
Summary:

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

Contributor:
Darwin Correspondence Project

DCP-LETT-6758

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
26 May 1869
Source of text:
DAR 86: A52a-c, DAR 84.1: 143
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.

Contributor:
Darwin Correspondence Project

DCP-LETT-6763

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
June 1869
Source of text:
DAR 181: 80
Summary:

Loss of juvenile colouring in South Down sheep.

Contributor:
Darwin Correspondence Project
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