With this style of modern building this would be common as Parrots that get out, will fly into the upper superstructure and roost on the steelworks. Getting them down it fairly easy as first, its just a matter of time before their bellies want to be filled or a drink water is needed. The second is a bit more extreme, but works well: a Super Soaker, once hit a couple of times, the fly/glide down.
Fairly common at bird fairs.