RECORD: Darwin, C. R. [1868]. Pavo muticus or spiciferus. CUL-DAR84.2.184-185. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR80-86 contain material for Darwin's book Descent of man (1871).

See Correspondence vol. 16, p. 889.


[184]

Pavo muticus or spiciferus (p 7) – top knot in both sexes equal? How in young? development of spurs is do & Crossoptilon

How is top-knot in ♀ Silver Pheasant & young & other cases of Gallinaceæ

Is beak permanently of different colour in males Estrelda amandava from female?

Thickness of summer & winter plumage of Grallatores

Any cases besides Ptarmigan of moulting white for Protection? (3 moults) - v. Goulds

Is Passer flavicollis like not very closely allied group ♀ P. domesticus do sexes of P. flavicollis differ?

Do young of P. domesticus resemble young of other allied finches? No

Buphus coromandus an Egret (Jerdon 111. p. 749) winter dress white - young pure white, with slight tinge of buff summer golden buff. How are young?

When was your most interesting description on males of representative species colour differing published. Jerdon Introduction Ask by Sclater

[184v]

Which species of Oriole is it, that F. after some years is identical with (?) or closely resembles male (?) Oriolus melanocephalus of Bengal Sclater showed me a Shieldrake in which young of both sexes resemble the male. New Zealand Sp. What species? [2 words illeg] ♂ head black do adult sexes differ greatly?

Does the immature plumage of Robin resemble immature plumage of Redstarts or other allied birds (Yes and stonechat) nightingale & thrush) most egrets white

Anastomus in your correction of adult summer dress & adults, white Jerdon was it winter or young or mature dress different (very close to Australian sp.)

In Rhynchæa has the female the ocelli on wing or tail? (both have ocelli) (Blyth examined number of specimens) Young of Turnix tiagon like males? about Trecheæ Blyth is nearly confident that like males -

[Left margin:] Add [p. 199]

[Right margin:] add to case of Buphus coromandus on other hand the young & the adults in their winter dress as [few words illeg]

[185]

old females

Orocetes erythropterus (a blue thrush) young male some blue like old male - I suppose young female like old female best examples Jerdon I p 515 - (mottled young ♀) & not blue)

Blue Nuthatch. Dendrophila frontalis Jerdon I 389 - Even in nest young male distinguished by black mark on head. - How are sexes in adult state?

Keep to

In Indian Horn-bill which builds up female are sexes coloured alike?

What does Jerdon mean by calling Crossoptilon auritus white when adult?

referred to C. Thibetanum)

[185v]

About Ducks, in your paper in Charlesworths (p. 30) megapicus - do you keep the same results about females undergoing double moult, though not at same time with male. Ask at Zool. Soc. (p. 42)

Do you suppose that Anas poecilorhyncha in which sexes alike has only single moult? (p. 43)

About genesis or origin of circular spots & ocelli; as in Tragopan & Argus - In spotted Finches or other birds, does colouration of allied species, of young or of females, favour idea that stripes break up into circular spots?


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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)

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