Used this to make a cage for our Jardine's Parrot. Works perfectly. A bit difficult to cut, but if it were easy to cut, our bird's built-in wire cutters (aka her beak) would be able to break it. She's got no hope of biting through this, but I can't say whether I'd trust it for containing a large parrot like a macaw (might work fine, I just don't have any experience with them).
One roll is just about enough for a 3'x4'x5' cage, if you're careful, and, even once you add in some lumber and stainless steel screws/latches/etc, is far cheaper than a comparably-sized quality premade cage.
I use the scraps to guard my miniature cactus collection from our cats. Also working perfectly for that so far.