About £2000 on my avairy. The shed was about £600 the wire part was £1000 (both were custom made by seperate companies so they would join togeather) and then with creating an internal cage, nest boxes, perches, feed bowls, toys etc about £400.
I have repaird the concrete floor and roof recently and that must have cost another £300.
The birds cost £375 ( Jo, female african grey) and £600 (Jake, male african grey)