SEXUAL SELECTION OR NATURAL SELECTION?

May 2007

For a long time, the “streamers” on the tails of male swallows have been thought to be primarily under sexual selection. This article from Current Biology suggests that a lot of inter-individual variation is in fact due to natural selection operating on the aerodynamics of different size males… You can also read this magazine account. Both are open access.

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1 Comment

Filed under Birds

One response to “SEXUAL SELECTION OR NATURAL SELECTION?

  1. Ron Harris

    Interesting theory, yet isn’t all natural selection also sexual selection?

    In evolution, an animal chooses a mate based on three components; beauty, skill and balance with their own physical attributes. If a swallow has a tail conformed to allow him to fly faster, that makes him superior to a swallow that is less endowed (so to speak), so in turn the skill would also add to him rating higher as a potential mate, would it not?

    Very interesting article and thank you for the link!
    Ron

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