Thanks for the information about the male plumage. [See 5374.] Will look to the papers in Ibis to which AN has referred him. He finds AN's theory captivating.
Down. | Bromley. | Kent. S.E.
My dear Sir
I thank you very sincerely for your very full & perfectly clear statement about the male plumage. I wish the evidence had been a little more distinct, though certainly from the several points which you mention, the probability of the truth of your view seems great. I will look to the papers in the Ibis to which you have been so good as to refer me. Your theory is to me so captivating that I much hope you will be able some day to prove it.
With my cordial thanks for your very kind letter believe me | yours very sincerely | Ch. Darwin
- f1 5376a.f1See letter from Alfred Newton, 21 January 1867 and nn. 2--6.
- f2 5376a.f2See letter from Alfred Newton, 21 January 1867 and n. 7.
- f3 5376a.f3CD discussed the instances of male birds that sat on eggs being smaller and less brightly coloured than females of the same species in Descent 2: 200--8.