What type of nesting 'box'/material for double bars?

[PaigeLouise1]

Thank you all so much for your ideas.

YEs the butcher birds have grown to four- babies and all. I'm going to try and buy an owl statue or something to put on top of the aviary and see if that works. I can't think of anything else that won't scare my birds as well. At the moment I have nearly the whole wire sections of the aviary covered in sheets and they still try and attack them.

[Diane]

In another topic someone suggested attaching netting to the top of the aviary and angling it down to the ground to help stop wild birds attacking through the wire.