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