Click for info on this
rope bungee for birds

Click for info on this
climbing net for birds

Dear Raken 

You can always get larger for smaller birds with bungees, but don't go smaller than the largest bird can use (hold onto, sit on comfortably). 

If you have only small birds like cockatiels, the XL would be overkill. I would not go any large than the large size.

So just to get this clear,  If i order large products such as bungees and the big climbing net i can use them for both my cockatiels and macaws?
 
I'm planning on making one fun room for me and my birds (big and small), and before i buy anything i'd always like to be 100% sure.
 
Thanks
Rakan

Yes, this will apply for ropes and nets, but not for most toys. 

The largest hole nets should be used for your macaws, using one with smaller holes could allow your macaws to get stuck going through one of the smaller ones.