[Tweeters] Competition for ecological niches limits evolution of new songbirds

Devorah the Ornithologist birdologist at gmail.com
Thu Aug 14 08:15:37 PDT 2014

hello everyone,

I just published this piece that discusses a truly lovely paper about
Himalayan songbirds. This paper finds that competition for ecological
niches (NOT reproductive isolation) affects the rate of speciation in
songbirds. It also finds that, as these niches fill up with species, the
rate of speciation slows or stops altogether. there are lots of other
interesting nuances that this leads to, which are also mentioned in the


of course, it includes lots of pretty pictures of gorgeous songbirds --
including one astonishingly rare songbird that none of us have ever seen --
along with lots of breathtaking pics of the himalayas that make me want
very much to visit! (i may try to weasel my way into the next expedition,
to document everything, of course!)


Devorah Bennu, PhD
*sunt lacrimae rerum et mentem mortalia tangunt. [*Virgil, *Aeneid*, 1.461
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