Is a 16 x 24 open done top actually bug enough for an Amazon parrot. I have a small space. The cage would fit much better than the 24 x 30 current cage?
Do you mean 24″ wide x 16″ deep?
Do you also currently have a 30″ wide x 24″ deep cage?
If your parrot is able to be outside of the cage (on top or on a stand) for several hours a day, then the smaller cage should be fine.
But if the bird is a large amazon you may wish to stay with the 30″ wide cage.