I currently have a Kakariki in a large cage that is 31" wide and 21" deep x 43" high (He is 5 years old, lives in dining room)
I have another bird cage that I use for my 2 rats that is 34 wide, 15 deep, 32 high. (Kaks old cage, in my sons room)
Both of these cages have bar space that is just between 6/8" 7/8"
So since I could have rehoused the rats and moved everyone around so that the IRN (I am hoping to get gets the bigger cage I now see after reading this forum the bar spacing is too big)
So I have found another cage that I can afford but it is slightly smaller than the one the Kakariki is in (the Kak is smaller than the length with tail a IRN would be) so that makes me kind of sad that the bigger bird will be in a smaller cage.
Here are the dimensions
# Cage Dimension: 31''w X 18''d X 36"h (less than half inch bar spacing)
# Overall Height 63" high with stand.
However here is my big question after reading how inquisitive etc the IRN are (my Kak is a very quiet sole) would the IRN not stick his head through the bars of the Kaks cage to see him while out and about ?? I am planning on keeping them in the same room

I feel like I will be onto a loosing plan even if I buy the lesser bar spacing cage.
Does anyone have other birds with cages with larger bar spacing?
Thankyou for any insight ..