That's the advantage of the hanging chain. It always hangs plumb. No matter the angle of the roof. While mine is held by a screw on a rafter. It would work just as well hanging from a hook into the mesh.
Grit feeder is a bit dirty sorry. Needs a clean. They like to dust bath right next to it.
How many birds?
I just use a small plastic hanging feeder with some lighting chain and a couple of S hooks. It hangs off a 14g bugle head screw into a structural member of the run But you could use the cloth if it's not too heavy I imagine. Less than $20 of materials.
It holds about 3kg of...