RECORD: Darwin, C. R. n.d. Abstract of Blyth and Weir. CUL-DAR84.2.144. 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).
[144]
Blyth & Weir
why Pavo spiciferus & not muticus?
p 7 of my M.S. - Java peacock
Land & Water "Z". I give Mr Blyth
Estrelda amandava at Beak of male different from fem (see in vol. 2. of Jerdon) is change permanent - or seasonals Jerdon does not say.
Birds of Paradise & Humming Birds
p 37 masculine plumage seasonal?
In Grallatores, which undergo a double moult (snipes, [illeg] , Glareolæ) & do not change colour, can cause be thicker & warmer plumage?
Any case beside Ptarmigan of moulting white for Protection.
In Anatidæ the males alone have a double moult & change colour
[144v]
p. 111. I have said that with some Drongo shrikes & Vidua disc-tail feathers alone developed & not whole plumage acquired at a vernal moult
p. 42 I have said ♂s alone in most Ducks undergo a double moult.
p. 43 I have said that Anas poecilorhyncha) in which sexes resemble each other appears to have only a single annual moult.
62. Weir mentioned affection of paired Birds & start pining after one is dead.
(62) Weir odd account of Birds attached to other quadrupeds.
Blyth Genesis of circular spots of color Gradation from bar or stripe into a spot or ocellus.- Argus Pheasant
How ♀ of Tragopan Pheas
Columba amaliæ, spotted Finches - If any species or ♀ of Guinea fowl had normally striped feathers - transition at least wd. be probable. - domestic cats Snakes.
Blyth Ask whether statement about Ducks true moulting of Ducks. p. 309 of Mag. of N. Hist.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022