How long has concrete perches been around ?

(For the bird cage).

Are concrete perches for my cockatiel bad for its feet? I know it is good for its nails? wont it cause lesions?

I have always heard that concrete or textured perches are a “must-have” for cockatiels because they can keps its nails trimmed. But I recently read an atricle that said that concrete or textured perches can irritate the bird’s feet and can cause lesions and other skin problems? is this true?