I don't know how the little chickadees managed to slant the wire mesh flooring but it seems to work anyway.
A young hawk decided to pay us an unwelcome visit. I didn’t see him at first but I noted that all of a sudden every living being in our backyard was completely immobile, frozen in space and time: two birds on one feeder, a squirrel sitting on the fence, a dove on the patio and a Carolina Wren on the other feeder.
Knowing this kind of behavior from a previous time, I finally found the hawk perching on a high branch. It didn’t take much to shoo him away and after a couple of minutes everything went back to normal.