"Tim Streater" wrote in message
...

Well, that sounds interesting in principle, but it's a large area to cover
with thin wire and I'd hate to have to find a break in it because Mr
Blackbird chased Mrs Blackbird all over the top of the thing.

Its a compromise, you need it to be robust enough to not break under normal
use and to break under stress. I doubt a bird would break a wire glued to
the surface, squirrels are a different game.