Questions correctness of two statements in Origin: 1. That fulmar petrels are the most numerous birds in the world;
2. That the increase of one form of thrush in Scotland has been concomitant with the decline of another form.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Questions correctness of two statements in Origin: 1. That fulmar petrels are the most numerous birds in the world;
2. That the increase of one form of thrush in Scotland has been concomitant with the decline of another form.