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DCP-LETT-6090

From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
4 Apr [1868]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

CD thanks JJW for the mine of information his last "ten!" letters contain. Comments on sexual display of pheasants and colour preferences of pigeons.

Asks about hens that pair earliest in spring and about possible existence of unpaired birds.

Contributor:
Darwin Correspondence Project

DCP-LETT-6091

From:
Charles Robert Darwin
To:
Edward Blyth
Date:
4 Apr [1868]
Source of text:
McGill University Library, Department of Rare Books
Summary:

Glad to hear about colours of Hylobates.

Cannot find any statement about which digits in man are most subject to syndactylism in Isidore Geoffroy [Saint-Hilaire]’s Histoire des anomalies [1832–7].

Asks questions concerned with seasonal and sexual changes in plumage of various bird species.

Does male woodpecker share in incubation?

Contributor:
Darwin Correspondence Project
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