RECORD: Darwin, C. R. n.d. Mr Gould / Urosticte Benjamini. CUL-DAR84.2.110. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 2.2022. 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).

Darwin cited this in Descent 2: 151.


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♀ Pheasant with short tails Mr Gould Toucan Beak

Urosticte benjamini: the female has all tail-feathers greenish-black except white tips to 2? 6 - exterior ones central ones. How many tail feathers? (10) In male how many of the central tail-feathers are tipped with white? (4) Relative shape & size of tips in the two sexes.

How much white in general plumage of both sexes – only a very little white ear-tufts

In Metallura are the four central tail feathers specially ornamented. No, but 6 laterals in ♀ often tipped with white

Young male of Urosticte like old but rufous throat instead of rich purple throat as in old male

The young males here [resemble] old males

Ask to see ♂ & ♀ Aïthurus polytmus to see whether both beautiful

[1v]

Aïthurus polytmus - Male splendid black & green, with very long narrow tail feather -young male resembles adult male in general colouring & soon shows some trace of elongated tail, which is not disc-formed - Female dull & inconspicuous with much white beneath

In male it is penultimate to outer feather but one outer feather which is so much elongated.

/over

I suppose that the young of Heliothrix Auriculatus resemble the female in absence of gorgitte [gorget] & ear tufts & in greater length of tail? I suppose that the tail of the young male actually becomes reduced Yes; but this occurs with Hawks in length with advancing age? Difference not very great in length of tail between sexes.

"The young resemble the ♀ but have spots of pale bronzing at tips of each breast & throat feathers

Are the young of Lampornis known, (in which females have more brilliant tails than the males) & do they resemble the adult males in their tails. Yes. What other genera are there in which females are more brilliant than the males? Toucans


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

File last updated 25 September, 2022