RECORD: Darwin, C. R. n.d.  Porphyrio martinicus. CUL-DAR85.B128. 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).

Darwin cited this in Descent, vol. 2.


[B128]

Zoolog. Gardens

Porphyrio martinicus - Helmet became brighter during during breeding season

Is ♀ larger than ♂(?)

Is she brighter or different in plumage?

Does she incubate or take charge of young?

How are young coloured in feather & Helmet in their winter Plumage?

(2) Tadorna variegata: did ♀ incubate - No

is ♀ larger than ♂ Male is larger & is more ornamented with his bronzed Head & back finely penciled slate colours; yet ♀ is redder on back & has white Head More colours

(Put this case in nas anomaly)

(3) Sexes alike No great difference viz sexual

(4) Is male Ostrich larger or smaller than ♀? Mr. B - ♂ somewhat larger

(5) Silver Pheasant what is colour of young ♂ Yes like ♀

When does top-knot be developed? ♀ has no top knot? Young male & f. for some time quite like ♀ So with Gold Pheasant. So that top knot & collar not developed for some time

(6) Gold Pheasant - How early is topknot developed in young ♂

[3 lines crossed]

[B128v]

In Eland both sexes have Horns, Horns developed somewhat earlier than in Koodoo - latter female has no Horns

Mr B. [Bartlett]

The Females have tail about 1/3 length of male; & young like ♀ for first 3 months: in common Pheasant about half the length of tail of males.

Parrot

Crossoptilon & Cheer pheasant do not show off the [few words illeg]

In Crossoptilon, tail splendidly developed & decomposed - The young males can hardly be distinguished by spurs til 6 months old - it is then a mere guess whether males or females – a guess


Return to homepage

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

File last updated 25 September, 2022