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1071Re: [wsbn] More Tales of the Tailless

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  • Andrea Robinsong
    Oct 3, 2006
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      flockage.
      Announcing a food source brings in the troops, thus serving dual purpose of bonding by feeding together, and offering protection from predators by providing cover within a group for an individual bird which would be more vulnerable alone.
      andrea robinsong

      larry arnold wrote:
       
      And another question...  why do so many birds announce their arrival at a food source?  aren't predators listening?  and don't predators cue (queue!) on vocals?
       
      Curious George
       
       
      ----- Original Message -----
      Sent: Monday, October 02, 2006 3:16 PM
      Subject: Re: [wsbn] More Tales of the Tailless

       
      Currently in our yard...  one tailless scrub-jay and one tailless black-chinned hummingbird, both entertaining to watch.  hmmm...  what the heck are birds' tails for?  help with birders' IDs?  easy plucking by predators?  control of guidance and maneuverability?  both birds seem to navigate just fine without their tails, so why should they expend energy to grow 'em?   tisk tisk
       
      Larry
       
      .

      !DSPAM:299,452196d887791002119993!
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