Harley2013 wrote:
Well, thats not exactly what i was looking for. What i was asking if the literature i had read was in fact true or myth for these specific species. But thank you for your wishes.
I'm not sure what literature you have read, but I would venture to say that it is a myth that if a species is smaller, it can live in a small cage.
Once your cage size starts getting below say about 24" wide, it becomes cramped for even the tiniest bird.
The cage in the photo at the beginning of this thread is (in my opinion) too small for any bird to live in. It would make an OK bedroom/sleeping cage for a bird that spent the day loose in the house.
You can see in the photo (which I assume is the stock photo from the catalog) that the perches are arranged in a way that prevents the bird from having anywhere at all to fly to. He can just sidle back and forth on the one perch, or hop to the wires. (If he is a wire climbing bird, which finches are not.) He can also hop down to the lower perch, but there is no room to fly. Even a small finch would only be able to fly a tiny distance.
That's why perches are better arranged going front to back, and being placed opposite to each other, so that the bird(s) can fly across the largest distance of the cage. (Which in that cage would still be no distance at all.)
Sorry to be so negative about that cage. I'm not intending to insult anyone who owns that type of cage. Just to point out that for birds, it isn't just a matter of how many square inches they have to live in, but rather a matter of how a flight path can be arranged for them. (Why they say wider is better than taller.)
Anyway, it sounds like the 29" cage you are working with now is a good solution to your problem. If it doesn't fit very well above your computer armoire, have you considered installing a shelf on an area of the wall that may have more space?