I have witnessed blue faced nesting in these and am pretty sure red faced and tri colour would also given there nesting habits.
Just remember to start the nest and stuff it with nesting material before placing in the aviary.
If other birds see it as only a holder of nesting material you need a provide a larger quantity of nesting material elsewhere in the Aviary that is easier to access to avoid unnecessary and increased activity by too many of the inhabitants as this will put birds off from nesting in it.
Bonus with these nests are they are easily cleaned and reused.
Living In a Unit is Worse Than Being Attached to a Ball and Chain.
Will try to make some for next breeding season. I did try to make something along these lines but like vertical log, out of plastic gutter guard (will try to remember to take a picture in the next few days). The birds didn't use them for nesting but took the nesting materials out to make nests in the nestboxed, and I suspect it was because they were not totally enclosed. So next season I will line the outside with something like paperbark so the birds have privacy and feel protected.
I can't comment on parrot finches (I suspect they prefer a fully enclosed box) but I know that starfinches and diamond sparrows will choose wire cylinder-type nests if they don't build a free-standing nest
have seen these used and used this type myself . i loosely line the nest with swamp grass and leave a few strands out the entrance. parrot finches (reds , tri , blue ) have used these although it is wise to offer a variety of nesting options as all of these parrot finches will readily nest in dry brush and fully enclosed nest boxes.
I realized that If I had to choose, I would rather have birds than airplanes. Charles Lindbergh