Although this is primarily a cage for sugar gliders, it also makes a great cage for my budgie. The front and back have mostly vertical bars and the sides have mostly horizontal bars, making it easy for him to climb. The wheels make this cage easy to move for cleaning purposes, and for when my budgie is making too much noise while I'm trying to do a conference call while working from home. I can easily roll him to the other room across my hard floors. I also really like the door latches. On other cages I've had, the doors were secured by sliding separate cage bars, which created noise and vibration throughout the rest of the cage. This cage has a proper latch with smooth, quiet movement. The bars are thick enough and stiff enough to attach heavy perches without the bars bending, like some other cages I've had. Overall very, very pleased with this cage. It's the best budgie cage I've had, and I've had budgies in my life for decades. Not shown in the photos, this cage also comes with two dual food/water dishes and a couple of wood dowels for perches, but I'm only using natural branches for perches, as recommended by my vet.