Scaffold Debris Netting: does it block the sun by very much? Other options for birds?

I have strawberries in a debris netted tunnel - they ripen. Whether they'd ripen faster without it I don't know.

Mine are also under debris netting and I'd sooner have them covered than the birds eating all my strawberries.
I can't think of any way to keep birds away apart from covering the fruit.

our problem is even when we cover them , sid the squirrel works his way in, and ferries them away in no time, even sits on the drive, fruit in mouth, sitting upright, as if to say "these are all mine", a cheeky little b****r..

If you have an Android mobile phone there is an app called Light Meter, which uses the phone's front facing camera to give a figure for light strength. I would imagine there would be a similar app. for an Apple phone.

I used the app. to see how much light my polycarbonate mini greenhouse blocks through the panes - the answer was rougly 10-20%, so not too bad in that case - I still open the doors and roof when conditions allow though. I find it important to rotate the phone about through several angles to find the maximum light number in a spot, as it can vary quite a lot just by moving the phone about, I guess the camera lens is fairly directional in it's light measuring.

I bought a roll of soft netting from Amazon (I think), and I think it allows nearly all the light through, as the mesh is very fine, with hole size of about 12mm.

My strawb. plants are unnetted so far, although of the first two berries to ripen, which I picked yesterday, one had a slime trial on it (that stuff doesn't wash off, yuck), and the second looked like it had been chomped by a bird. I have spread pellets now for the slimy ones, and if more birdy type chomps are taken will bring the netting out. Last year I used thin garden stakes to support the netting and keep it taut, so that the birds are less likely to get caught up in it, I think if the netting is loose and messy then they're more likely to get trapped.