Hmm. I wonder why the egghead engineers at GE, Pratt&Whitney, and Rolls-Royce have never thought about that? /sarcasm. Not to mention the nacelle designers and airframe engineers at Boeing and Airbus. Look—birdstrikes are so common that it is part of engine certification tests. Engine manufacturers have to demonstrate that the engine can sustain a minimum amount of power following a simulated birdstrike on the test stand. They test for both single large birds, and multiple smaller birds. Of course real life doesn’t always follow testing protocol. Believe me, if it was as easy as putting up a “screen” it would have been done decades ago.
Apparently my “why don’t they have a screen over the intake” post should have had a smiley. Sorry about that.
Why not install FLAK guns to shoot down on coming bird flocks?