RECORD: Darwin, C. R. n.d. There is so much union of character in Picidae. CUL-DAR205.5.59. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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 volume CUL-DAR205.5 contains notes on the principle of divergence, transitional organs and instincts.
[59]
There is so much union of character in Picidæ, that probably descended from one stock — so of petrels — yet we have an awk & duck-billed petrel now there might be parent of great groups— this must be adaption & not a remnant of a parent intermediate race— so with woodpecker — the ground & flying division — is Sound? Consult Swainson for parallel cases—
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 4 March, 2023