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Asks CD to support his candidacy for Professorship of Zoology at Cambridge. Since he has spent many years travelling, he is not well enough known at the University.
Declines writing testimonial for AN for the Cambridge Professorship in Zoology. The post requires expertise in comparative anatomy and histology, whereas AN’s work is on habits and colours of birds.
CD need not apologise for not writing a testimonial for him. He knows comparative anatomy, although he has confined his publication to ornithology. Agrees that with a few members of the University a recommendation from CD would be harmful.
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Thanks for new edition of Origin [4th ed.].
Has met CD’s son [George] at Trinity College.
Seeks explanation of the case of the Rhynchaea, of which the female is more beautiful than the male, with the young resembling the latter. Wallace has told CD that at Nottingham AN explained this by the male being the incubator.
Does the male black Australian swan, or the black and white S. American swan, differ from the female in colour of plumage?
Suggests that, in some birds, plumage of males is less colourful than that of females; the reason is that the males perform the duties of incubation [see Descent 2: 204 n.].
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.
Male dotterels take care of young and are less brilliantly coloured than females.
Thanks for information about the dotterel.
CD had ascertained by dissection that the female of the carrion-hawk of the Falkland Islands is very much brighter coloured than the male. Has inquired about its nidification. Mentions other instances of female birds that are brighter and more beautiful than the males and suggests causes for this anomaly.
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