Michael wrote:I wanted to mention a reason I don't think 3/4 inch bar spacing is good for Senegal Parrots, Conures, Cockatiels, Parakeets, and other smaller species for which the spacing would normally be considered suitable.
I find it's too large for most of what you mentioned above (Cockatiels, Parakeets and most small conures (including everything the size of a GCC), but I do not believe it's too large for a Senegal and other birds that size (they are much larger than the other ones you've listed here...)
All my Pois are in cages with 3/4" bar spacing, some have been for quite a few years, and I've never had any serious problems due to this.
My Senegal Parrot lives in a cage with 5/8" spacing and my Cape Parrot in a cage with 3/4" spacing. Although the Cape is significantly bigger than the Senegal, his feet are still barely big enough to conveniently climb 3/4" spacing. Although he can, I'd imagine a Senegal (or similarly sized parrot) having a tougher time.
Parrots are adaptable. As I said, all my pois have a cage with 3/4" spacing and trust me, they have no difficulties getting around if they do so by climbing the bars of their cages (horizontal and vertical bars).
The biggest reason I don't like 3/4" for smaller parrots is because of the toys/perches. Most of the toys and perches suitable in size for the small parrots are made to be bolted on to smaller cages. The bar spacing on 3/4" cage makes it difficult, too loose, or impossible to bolt the thinner bolts meant for the smaller parrots. I'm kind of stuck using stuff slightly too big for Truman in his cage because the smaller stuff wouldn't even be able to bolt on without falling off. This arrangement is alright for him but I don't think it would work so well for any parrot smaller (including a Jardine's).
While I agree that this particular type of situation is annoying, I do find that it has improved a lot these last few years (most toys/perches I've bought recently don't have this problem). But there are still ways around it - if the toy/perch is held in place with washers and the ones that come with the toy/perch are too small, just go to a hardware store and get some in a more appropriate size. I've done this in the past. If a toy comes with a quick link that doesn't quite make it over the cage bar, either substitute it with another which does from another toy (one not being currently used or even from a stack of older quick links (I always keep them once a toy is "done" for this exact reason) or use a baby link to hang the toy. Be resourceful.
If 3/4" spacing is ruled out for Jardine's Parrots, Senegals, Conures, and anything smaller than what is considered medium, this means that the upper size limit of cages for small parrots is around 24"x24". I know some people believe they should have a roomier cage, however, the problem of bar spacing seems to outweigh the benefit of the additional space. So even if a larger bar spacing is safe for the parrot, consider how accessories will be able to connect to this spacing and if it will be comfortable for the parrot to climb on. From my personal observation, 3/4" bar spacing is just too large for the smaller parrots and 5/8" is ideal.
While I agree that I will only go so big as long as the bar spacing is appropriate, there are bigger cages out there which still have an appropriate bar spacing. For the smaller guys, I've seen plenty of flight cages which are at least 28" wide and have 5/8" bar spacing. I've also seen other cages which are once again at least 28" wide and have 3/4" bar spacing for the medium birds.