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DCP-LETT-5748

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
[before 30 May 1868]
Source of text:
DAR 181: 73
Summary:

Reversion of tamed animals to wild behaviour.

Contributor:
Darwin Correspondence Project

DCP-LETT-6151

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
[4–7] May 1868
Source of text:
DAR 84.1: 75–6, DAR 86: C3–4
Summary:

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

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

Contributor:
Darwin Correspondence Project

DCP-LETT-6181

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 84.1: 81–2, DAR 86: A37–8
Summary:

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

Contributor:
Darwin Correspondence Project
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