There have been a lot of comments, but this topic is not much
different from birds on sailboats... so here goes:
* Birds are smart. Plastic owls are not. Not even when their
little heads bob, and they face North. They don't work,
at least, not for long.
* CD's seem to....a string of them between the headstay and mast,
and somewhere aft, or along the lifelines, seems to work.
The reflections annoy the birds. But they wll probably be
altogether too visible and annoying for humans, as well.
* Safety reasons seem to preclude shooting 'em. Yet, air rifles
or pellet guns might have sufficiently limited range to be
effective. Or, possibly slingshots. Check your local laws
regarding weapons discharge, and see what the police recommend.
The head of public works in a town I lived in got really pissed
off at the birds on a tree over his pool....so he persuaded them
to leave. Unfortunately, the neighbors didn't take kindly to the
weapons discharge, and he no longer works where he lives. They
didn't prosecute...but he had to resign.
* Loose tubing is an interesting idea. But unless you can cover
the entire antenna with it, birds will eventually figure out
what's not going to dump them every time they land.
* How about shooting paper wads from a shotgun? Should be safe..
particularly if cleared with law enforcement in advance.
Question is whether they'd carry to the tower top.
* and finally...I was requested to shoot a bow and arrow over a tree,
in Chevy Chase MD, in order to properly elevate a 160m antenna.
After some inspection, I declined. It's a weapon...and discharge is
illegal. Entirely too suburban to avoid hitting something unintended.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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