by miajag » Tue May 11, 2010 2:57 pm
I currently have the same size cage for a similar sized bird, but am strongly considering replacing it with a larger flight cage, especially now that A) she's getting better at flying and B) I'm going to be at home a lot less for the next few months than I have recently, and thus she will have to spend more time in the cage. I think the real question is "why NOT a bigger cage." There are certainly some things worth taking into account such as cost, the space you have available, and the fact that your parrot views its current cage, regardless of its size, as its "home" and replacing it will be stressful to some extent. Obviously you can't ask your parrot "would you rather stay in your current, familiar cage, or move to a new one that is different, but quite a bit larger?" and get an answer. So you kind of have to weigh how much happier you think the parrot would be in a larger cage against the cons. For me personally, I think the fact that Winnie is used to being out a lot and having room to fly means she'd be quite a bit happier in a larger cage than the one she has now. And, I have the money and the space, so those aren't really issues.
In short, I'd say it depends on you and your own situation. I don't think 18x18 is "too small" for a Senegal, especially one who apparently gets as much out-of-cage time as Kili, but in my opinion it's hard to err on the side of "too big," so, again, I think the real question you should be asking is "why not?"
edited to add: It's also rather fallacious to argue that a bigger cage would be pointless because she doesn't even use the bottom half of her cage now. Is there even anything in the bottom half of her cage? Because I'm pretty sure that if you put her food and water in the bottom half, she would use it. Birds like being up high, and rarely go to the bottom of their cage without a good reason. This is not to say I disagree with your overall position, especially since 20x24 likely isn't enough of a size upgrade over 18x18 to be "worth it."