bird netting versus fishing line for calm chickens?

We have wild birds (seagulls, ospreys, crows, ravens) flying over - not interested (so far) in chickens in the 20'x25' run but freaking them out and making them hide under the coop (smart chickens). Sometimes the birds fly by as frequently as every few minutes.

While I had fishing line over the run in mind for protection from birds of prey, now I am thinking would 2"x2" cell bird netting instead make any difference in terms of how the chickens see or perceive potential threats in the sky? I.e. would they see less through the netting or understand they are protected from what is going on above the netting and thus freaking out less?