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
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022