Perhaps you can try to make a perch with different levels according to the different sizes of birds feet with a Fimo paste ?
Or, I try something especially for you : the birds' tree !!
I've used my metallic tree for jewels and some white adhesive paste which fixes temporary your birds and can be easily removed !
![Image](http://i59.servimg.com/u/f59/12/43/54/17/th/p1040712.jpg)
![Image](http://i59.servimg.com/u/f59/12/43/54/17/th/p1040713.jpg)
With the nest :
![Image](http://i59.servimg.com/u/f59/12/43/54/17/th/p1040714.jpg)
I hope you like it and it gives you ideas
![Wink ;)](./images/smilies/icon_e_wink.gif)