I've got a cockateil in a large bird cage, the cage came from the same store as the bird. Anyway, it's floor is a wire mesh suspended above a plastic poop tray, so the bird, when not on it's perches, walks along a surface which is not a flat surface, it doesn't seem to mind, and I would assume getting its talons around the wire cage mesh floor is totally fine as in the wild they walk on twigs on trees, which have a similar circumfrence and hardness. My grandma says it should be a flat floor, like I should put some paper down or something, but as I said, there is a poop tray below the surface, and poop belongs in that, not on any substrate in the actual cage, like she is calling for. My grandma's bird cage, a separate cage and a similar bird, has a plastic floor that is flat. My grandma is suggesting that my cage floor is a problem, what do you think? I feel that they wouldn't make and sell cages with floors that were inappropriate, and I kind of just wanna show my grandma these answers