Search: Weir, J. J. in correspondent 
1860-1869::1868::05::18 in date 
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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
From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
[before 18 May 1868]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

CD cannot remember whether correspondent believed the wing that Gallus bankiva opens and scrapes before the female, is ornamented. He fears it is not.

Contributor:
Darwin Correspondence Project