You make very good points.
In my case, my coop and run are covered. I am more concerned with the back yard for part time free ranging. It isn't practical to cover the back yard with netting, and I do like to see the songbirds.
In the tortoise area, the fishing line is 2-4" apart in a row. That seems to work well in that particular area for larger birds.
However, tortoises are not as yummy as chickens.
So...I will try a combination of shrubs/trees, small hides, and fishing line in certain areas. All the while, accepting that nothing is 100% effective.
In my case, my coop and run are covered. I am more concerned with the back yard for part time free ranging. It isn't practical to cover the back yard with netting, and I do like to see the songbirds.
In the tortoise area, the fishing line is 2-4" apart in a row. That seems to work well in that particular area for larger birds.
However, tortoises are not as yummy as chickens.

So...I will try a combination of shrubs/trees, small hides, and fishing line in certain areas. All the while, accepting that nothing is 100% effective.