Oh, well, that fence is way too short,
they can jump that high so clipping wings won't help much.
I sure don't see a feasible way to add a roof to it,
what with the concrete wall(hard to attach) and the trees.
Maybe a whole new fence, 14ga 2x4 welded wire 6' high with Tposts.
How many birds do you have?
and....
Where in this world are you located?
Climate, and time of year, is almost always a factor.
Please add your general geographical location to your profile.
It's easy to do, (laptop version shown), then it's always there!
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