I couldn’t resist…

Valentine Darwin

Incidentally, Charles Darwin’s birthday was two days ago on 12 February. He would have been 199.

7 Responses to “Happy Valentine’s Day”


  • Only you would find this Silke – LOL!!!


  • “Incidentally, Charles Darwin’s birthday was two days ago on 12 February. He would have been 199.” Coincidentally, the same is true for Abraham Lincoln….


  • Happy Valentines Day!

    Coincidently, they still haven’t found a new species since Darwin came up with his “theory.” ;)


  • New finches? You mean they are exactly the same species they were 150 years ago? Goodness!


  • Speciation is a slow process compared to a human life-span. It is generally thought that the cichlid fishes have most recently speciated in as short as 4000years. Of course mutation events are much faster in the prokarytic lifeforms. In the latter, the protocol
    has been to term these ‘strains’ rather than new species. It’s partly semantics and partly biology.


  • Teach, it’s interesting that you would bring up finches because it is a population that is perfect for evolutionary studies–a limited number of species in a closed ecosystem on an isolated island. In the Pulitzer Prize-winning book The Beak of the Finch, Jonathan Weiner describes the research of two evolutionary biologists who have studied these finches for over 20 years. The book covers a lot of ground: from field demonstrations of directional selection, stabilizing selection, sexual selection, hybridization, and even speciation. It’s a great example of how species are constantly changing.

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