It's a little small width wise, I think they usually recommend minimum of 18x18 but for one it would probably be ok. They love walking and climbing, not big flyers but lots of people get flight cages because they are busy little birds. I bought an a &e flight cage and it is stuffed with toys, perches and boings. Linnie cages usually look very busy and packed compared to other parrot cages but they really like it that way.