Re: sort o' ot -- maybe some good news on extant dino's and towers

["jrc" <jrccea@bellsouth.net>]

> Depends on the human. And what kind of bird?

I tend to agree with that.....  :-)
> Are there data that show the combo of flashing/steady are absolutely 
> necessary?   Intuitively, it seems obvious that a safe flashing-only 
> format could be devised, but I don't really know.

Nor do I know.  I just know that speaking as a pilot, it is far easier to 
detect the ones that have both steady and flashing lights.
> As I understand it, having only read the abstract, guy-wire bird 
> fatalities are included in the analysis. Most of the towers sampled, btw, 
> are "110-146m AGL" w/ 3 being ">=300m".

Most are low, but I regularly have to divert around two that are a half mile 
high and directly on my course ( I normally fly the Cherokee at 1200-1800 
feet), and there are about six or eight nearby towers that are 1400-1600 
feet high.
> --- On Fri, 3/20/09, jrc <jrccea@bellsouth.net> wrote:
>
> > From: jrc <jrccea@bellsouth.net>
> > Subject: Re: sort o' ot -- maybe some good news on extant dino's and 
> > towers
> > To: d_ohmes@yahoo.com
> > Date: Friday, March 20, 2009, 12:39 PM
> > What would be an acceptable swap-off rate between reduced
> > avian fatalites and increased human fatalities?  Some of
> > these towers stick up a half mile above ground level and
> > many general aviation aircraft cruise lower than that.
> > Other towers that don't stick up so far, are close
> > enough to airstrips to be above the flight path for landing
> > and taking off.  Would one to one be about right, or should
> > we be prepared to sacrifice more birds than humans?
> >
> > On a loosely related subject, how should birds be protected
> > from tower guy wires?  At least we pilots know the
> > approximate angle at which the unlit guy wires diverge from
> > the tower.
> > JimC
> >
> > ----- Original Message ----- From: "don ohmes"
> > <d_ohmes@yahoo.com>
> > To: <dinosaur@usc.edu>
> > Sent: Friday, March 20, 2009 9:08 AM
> > Subject: sort o' ot -- maybe some good news on extant
> > dino's and towers
> >
> >
> > >
> > > Perhaps adjusting the flash frequency could reduce
> > fatalities even further...
> > >
> > > "Communication towers, lights, and birds:
> > successful methods of reducing the frequency of avian
> > collisions" --
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